SECTION 11 53 13

LABORATORY FUME HOODS

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PART 1    GENERAL
1.1	SECTION INCLUDES
A.	Laboratory fume hoods, including the following types:
1.	SE AireStream Series.
2.	LE Series.
3.	CE Series.
4.	SE FM Series.
5.	SE Dual Entry Series.
6.	LE FM Series.
7.	LE Dual Entry Series.
8.	Perchloric Acid Fume Hoods.
9.	Acid Digestion Fume Hoods.
10.	Trace Metals Fume Hoods.
11.	Radioisotope Fume Hoods.
12.	Modular Fume Hoods (UniMax).
B.	Vented Enclosures (EnviroMax).
C.	Fume hood services and accessories.
1.2	RELATED SECTIONS
A.	Section  - .
1.3	REFERENCES
A.	ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials.
B.	ANSI/AIHA Z9.5-2012 - Standard on Ventilation for Laboratories.
C.	ANSI Z21.15 - Manually Operated Gas Valves for Appliances, Appliance Connector Valves and Hose End Valves.
D.	ASHRAE 110-1995 - Method of Testing the Performance of Laboratory Fume Hoods.
E.	CAL/OSHA 5154.1 - Ventilation Requirements for Laboratory-Type Hood Operations.
F.	CSA-22.2 - Canadian Standard for Wire/Cable Requirements and Use.
G.	ISO 9001-2008 - Certified Company.
H.	OSHA 29-CFR-1910 - Occupational Safety and Health Standards.
I.	NFPA-45 - Standard on Fire Protection for Laboratories.
J.	SEFA 1-2003 - Recommended Practices for Laboratory Fume Hoods.
K.	UL 1805 - Standard for Laboratory Fume Hoods and Cabinets.
L.	UL 3101 - Electrical Equipment for Laboratory Use.
1.4	SUBMITTALS
A.	Submit under provisions of Section 01 30 00 - Administrative Requirements.
B.	Product Data: Manufacturer's data sheets on each product to be used, including:
1.	Preparation instructions and recommendations.
2.	Storage and handling requirements and recommendations.
3.	Installation methods.
C.	Shop Drawings: Include plans, elevations, sections and service run spaces.
1.	Service fittings, as related to the fume hood, shall illustrate location and type when required.
2.	Mechanical and electrical services, as related to the fume hood, shall be illustrated where required.
3.	Face opening, air volume and static pressure data of each fume hood shall be clearly noted in drawings or separate documentation.
D.	Submit manufacturer's test data and installation instructions for each type of fume hood. Provide data indicating compliance with UL 1805, ASHRAE 110-95 Standards and ISO 9001-2008.
E.	Verification Samples:
1.	Interior fume hood liner material, 6 x 6 inch section.
2.	Countertops with dished formation, 6 x 6 inch section.
3.	Color samples of manufacturer's finish.
4.	Hardware and accessories including sample sash handle and/or pulls, cables, and pulleys.
1.5	QUALITY ASSURANCE
A.	Sourcing: Laboratory fume hoods shall be the product of a single manufacturer.
B.	Manufacturer Qualifications: Minimum 5 years experience manufacturing similar products.
1.	Laboratory Fume Hoods manufactured and assembled entirely in the USA.
2.	ISO 9001-2008 Certified Company.
3.	Manufacturer must maintain a fume hood examination lab at plant location with ability to conduct ANSI/ASHRAE 110 testing.
C.	Installer Qualifications: Minimum 2 years experience installing similar products.
D.	Mock-Up: Provide a mock-up for evaluation of surface preparation techniques and application workmanship.
1.	Finish areas designated by Architect.
2.	Do not proceed with remaining work until workmanship is approved by Architect.
3.	Rework mock-up area as required to produce acceptable work.
1.6	DELIVERY, STORAGE, AND HANDLING
A.	Deliver and store products in manufacturer's unopened packaging bearing the brand name and manufacturer's identification until ready for installation.
B.	Inspect crate for damage and possible concealed damage that may have occurred in transit.
C.	Handling: Handle materials to avoid damage.
1.7	PROJECT CONDITIONS
A.	Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's recommended limits.
1.8	SEQUENCING
A.	Ensure that products of this section are supplied to affected trades in time to prevent interruption of construction progress.
1.9	WARRANTY
A.	Warranty: Manufacturer's 5 year limited warranty. The manufacturer shall repair or replace any portion of the fume hood, under normal use, if examination discloses it to have been defective within the warranty period. 
PART 2    GENERAL
2.1	MANUFACTURERS
A.	Acceptable Manufacturer: HEMCO Corporation, which is located at:<BR />711 S. Powell Rd.<BR />Independence, MO 64056<BR />Toll Free Tel: 800-779-4362<BR />Tel: 816-796-2900<BR />Fax: 816-796-3333<BR />Email: request info (sales@hemcocorp.com);Web: http://www.hemcocorp.com/ 
B.	Substitutions: Not permitted.
C.	Requests for substitutions will be considered in accordance with provisions of Section 01 60 00 - Product Requirements.
2.2	SE AIRESTREAM SERIES FUME HOODS
A.	Basis of Design: UniFlow SE AireStream Series by HEMCO Corporation.
B.	Components:
1.	Face Opening: Molded aerodynamic opening with upper and lower airfoils to minimize air flow turbulence and provide a constant volume of air flow.
2.	Baffle System: VaraFlow design with Vector slots:
a.	Material: HiPel composite resin.
b.	Fume hood shall effectively maintain safe, constant exhaust volume at any baffle position.
c.	Constructed of upper, middle, and lower sections.
d.	Positioned such that horizontal and vertical edge slots effectively create near laminar air flow through the fume chamber.
e.	Factory set such that the fume hood is at its optimum performance level.
f.	Lower Baffle: Staggered slotted array.
g.	Rounded edges to raw fumes smoothly through baffle system.
h.	Removable for cleaning.
3.	Exhaust Collar: Integral, bell shaped.
a.	Standard 12 inch round collars.
b.	Same HiPel material as hood structure.
c.	Chemically bonded to the fume chamber ceiling.
4.	Component Fume Chamber: One piece, molded.
a.	Liner: Non-conducting white HiPel, 3/16 inch nominal thickness. Molded one piece seamless with coved corners.
1)	Chemical resistant.
2)	Flame resistant. Meets UL 1805 and NFPA 45.
b.	Liner: 304 Stainless Steel, 16 ga, No. 4 finish.
c.	Liner: 316 Stainless Steel, 16 ga, No. 4 finish.
d.	Liner: HDPE, 1/4 inch (6 mm) nominal thickness.
e.	Liner: PVC sheet, 1/4 inch nominal thickness.
f.	Liner: Polypropylene, white, 1/4 inch nominal thickness.
g.	Coved Corners.
h.	Smooth finish for ease of cleaning.
i.	Interior Vertical Clearance: 52 inches nominal.
5.	Constant Air Volume (CAV) Model: Automatic air bypass to provide a constant air volume.
a.	When the sash is closed, upper bypass and lower bypass is drawing 100 percent of the supply air.
b.	As the sash is raised, the upper bypass begins to close and is completely closed when the sash reaches the full open position.
6.	Variable Air Volume (VAV) Model: Restricted air bypass:
a.	With a design face velocity set, the air volume changes as the sash is raised or lowered.
b.	A minimum flow of 25 CFM per square foot of surface is recommended by the NFPA when the sash is closed.
7.	Superstructure and Mold Liner Material: Unitized composite construction for total chemical resistance, strength, durability and reduced weight:
a.	Material: HiPel, white thermosetting resin surface layers with fiberglass reinforced composite core, 3/16 inch thick.
b.	Side Walls: 5 inches wide, chemically bonded to liner.
c.	Materials are tested and classified by U.L. for Class A fire resistant, non-metallic materials used in laboratories.
8.	Fascia Posts: Aerodynamically angled to provide uniform air flow in the fume chamber. Continuation of the one piece HiPel liner.
9.	Removable Front Panel: Located above the sash allows access to electrical connections, light bulb change out, sash weights and duct connections.
10.	Exterior Side Panels: Unitized and chemically bonded to form homogeneous one piece superstructure. HiPel resin.
11.	Air Foil:
a.	Material: HiPel composite resin, non-conducting.
b.	Smooth color finish.
1)	Color: _____.
c.	Air foil across lower sash to provide clean sweep of air over work surface.
d.	One inch air bypass inlet under air foil to insure uniform air flow at face and to sweep heavier than air vapors off work surface.
e.	Upper airfoil provides clean flow of air in upper area of the fume chamber to minimize turbulent air flow through the fume chamber.
12.	Sash: Picture frame sash. 
a.	Glazing: Clear tempered safety glass.
1)	Extended View Panel: Extended sash height allowing full visual display of fume hood interior.
b.	Glazing: Clear laminated safety glass.
c.	Glazing: Clear polycarbonate.
13.	Sash Assembly: Full view, vertical rising.
a.	Frame, Track, and Pull: Chemical resistant PVC.
b.	Counterbalance System: PVC coated, 1/8 inch diameter stainless steel aircraft cable with attached single sash counter weight.
1)	Cable Pulley System: 2 inch diameter nylon ball bearing.
c.	Full width finger sash pull.
d.	Lifting force of no more than 5 pounds.
1)	Sash cable runs through bottom of sash to prevent.
e.	Adjustable turnbuckle for leveling counterweight/sash.
14.	Sash Assembly: Combination Sash.
a.	Vertical viewing with horizontal sliding doors.
b.	Sliding panels constructed of clear tempered safety glass set into a stainless steel frame.
c.	Allows for both horizontal and vertical movement options to the end user.
d.	Counterbalance System: Two PVC coated, 1/8 inch diameter stainless steel aircraft cable with attached single sash counter weight.
1)	Cable Pulley System: 2 inch diameter nylon ball bearing.
e.	Lifting force of no more than 5 pounds.
1)	Sash cable runs through bottom of sash to prevent.
f.	Adjustable turnbuckle for leveling counterweight/sash.
15.	Sash Assembly: Horizontal Sliding Sash.
a.	Anodized aluminum top rail and bottom track.
b.	Bottom supported.
c.	Sliding panels shall be framed with anodized aluminum frame on top and a bottom supported aluminum rolling frame.
d.	Standard clear tempered safety glass panels set into an aluminum track.
e.	Housed within the stainless steel frame.
16.	Illumination of Work Area: Area inside the superstructure from side to side, from face of baffle to inside face of sash, and from working surface to a height of 52 inches.
a.	Minimum Illumination: 80 foot candles.
b.	Fixtures: 2 tube LED fixture:
1)	48 inch hood: 24 inch.
2)	60 inch hood: 36 inch.
3)	72 inch hood: 48 inch.
4)	96 inch hood: (2) 36 inch.
5)	UL and CSA listed.
6)	Mounted fixture with removable stainless steel light bracket with mirrored finish.
7)	Clear tempered safety glass panel provides vapor-tight barrier and seal to separate the fixture from the hood interior.
8)	Explosion-proof fixture: Class I Division II.
9)	Explosion-proof fixture: Class I Division I.
C.	Materials:
1.	HiPel Composite: Two white surfaces chemically bonded to a fiberglass reinforced core layer of thermosetting resin. No exposed fiberglass.
a.	Nominal Thickness: 4.5 mm.
b.	Meets or exceeds NFPA 45.
2.	Sash Glass: 3/16 inch clear Tempered Safety Glass per ASTM C 1048.
3.	Sash Glass: 1/4 inch clear Laminated Safety Glass per ASTM C 1172.
4.	Sash Glass: 3/16 inch clear Polycarbonate Safety Glass.
5.	Sash Glass: 1/4 inch clear Polycarbonate Safety Glass.
D.	Fasteners:
1.	Interior Surfaces: PVC-capped No. 8 pan stainless steel screws and nylon bolts.
2.	Exterior Structural Members: No. 8 pan stainless steel screws and nylon bolts.
E.	Work Surfaces:
1.	Epoxy Resin: 1-1/4 inches thick, molded to contain chemical spillage, dished section not less than 1/4 inch thick. Black.
2.	Phenolic Resin: 1-1/4 inches thick, molded to contain chemical spillage, dished section not less than 1/4 inch thick. Charcoal.
3.	316 Stainless Steel: 6 gauge, No. 4 finish, dished construction with marine edge, dished section not less than 1/4 inch thick.
4.	304 Stainless Steel: 16 gauge, No. 4 finish, dished construction with marine edge, dished section not less than 1/4 inch thick.
F.	Base Cabinets and Tables:
1.	Base Cabinet: Constructed of furniture grade steel. With adjustable shelf and levelers.
2.	Acid Cabinet: Interior lined with one-piece acid resistant white composite resin liner with all covered corners for superior corrosion resistance. With vents and fixed shelf.
3.	Flammable Cabinet: Provides safe storage of flammables. Constructed of welded double wall furniture grade steel. With adjustable shelf and locking hinged doors. Meets NFPA codes.
4.	Fume Hood Base Table: Heavy duty, all welded 2 inch square tube steel construction. Each leg has levelers with fitted black boots.
a.	Bench Height: 35 inches.
b.	Sitting Height: 28 inches.
2.3	LE SERIES FUME HOODS
A.	Basis of Design: UniFlow LE Series by HEMCO Corporation.
B.	Components:
1.	Face Opening: Molded aerodynamic opening with upper and lower airfoils to minimize air flow turbulence and provide a constant volume of air flow.
2.	Baffle System: VaraFlow design with Vector slots:
a.	Material: HiPel composite resin.
b.	Fume hood shall effectively maintain safe, constant exhaust volume at any baffle position.
c.	Constructed of upper, middle, and lower sections.
d.	Positioned such that horizontal and vertical edge slots effectively create near laminar air flow through the fume chamber.
e.	Factory set such that the fume hood is at its optimum performance level.
f.	Lower Baffle: Staggered slotted array.
g.	Rounded edges to raw fumes smoothly through baffle system.
h.	Removable for cleaning.
3.	Exhaust Collar: Integral, bell shaped.
a.	Standard round collars.
b.	Same HiPel material as hood structure.
c.	Chemically bonded to the fume chamber ceiling.
d.	36 inch hood: 1-8 inch diameter. 
e.	48 inch hood: 1-10 inch diameter.
f.	60 inch hood: 1-10 inch diameter.
g.	72 inch hood: 1-12 inch diameter.
h.	96 inch hood: 2-10 inch diameter.
4.	Component Fume Chamber: One piece, molded.
a.	Liner: Non-conducting white HiPel, 3/16 inch nominal thickness. Molded one piece seamless with coved corners.
1)	Chemical resistant.
2)	Flame resistant. Meets UL 1805 and NFPA 45.
b.	Liner: 304 Stainless Steel, 16 ga, No. 4 finish.
c.	Liner: 316 Stainless Steel, 16 ga, No. 4 finish.
d.	Liner: PVC sheet, 1/4 inch nominal thickness.
e.	Liner: Polypropylene, white, 1/4 inch nominal thickness.
f.	Coved Corners.
g.	Smooth finish for ease of cleaning.
h.	Interior Vertical Clearance: 44 inches nominal.
5.	Constant Air Volume (CAV) Model: Automatic air bypass to provide a constant air volume.
a.	When the sash is closed, upper bypass and lower bypass is drawing 100 percent of the supply air.
b.	As the sash is raised, the upper bypass begins to close and is completely closed when the sash reaches the full open position.
6.	Variable Air Volume (VAV) Model: Restricted air bypass:
a.	With a design face velocity set, the air volume changes as the sash is raised or lowered.
b.	A minimum flow of 25 CFM per square foot of surface is recommended by the NFPA when the sash is closed.
7.	Superstructure and Mold Liner Material: Unitized composite construction for total chemical resistance, strength, durability and reduced weight:
a.	Material: HiPel, white thermosetting resin surface layers with fiberglass reinforced composite core, 3/16 inch thick.
b.	Side Walls: 5 inches wide, chemically bonded to liner.
c.	Materials are tested and classified by U.L. for Class A fire resistant, non-metallic materials used in laboratories.
8.	Fascia Posts: Aerodynamically angled to provide uniform air flow in the fume chamber. Continuation of the one piece HiPel liner.
9.	Removable Front Panel: Located above the sash allows access to electrical connections, light bulb change out, sash weights and duct connections.
10.	Exterior Side Panels: Unitized and chemically bonded to form homogeneous one piece superstructure. HiPel resin.
11.	Air Foil:
a.	Material: HiPel composite resin, non-conducting.
b.	Smooth color finish.
1)	Color: _____.
c.	Air foil across lower sash to provide clean sweep of air over work surface.
d.	One inch air bypass inlet under air foil to insure uniform air flow at face and to sweep heavier than air vapors off work surface.
e.	Upper airfoil provides clean flow of air in upper area of the fume chamber to minimize turbulent air flow through the fume chamber.
12.	Sash: Picture frame sash: 
a.	Glazing: Clear tempered safety glass.
1)	Extended View Panel: Extended sash height allowing full visual display of fume hood interior.
b.	Glazing: Clear laminated safety glass.
c.	Glazing: Clear polycarbonate.
13.	Sash Assembly: Full view, vertical rising.
a.	Frame, Track, and Pull: Chemical resistant PVC.
b.	Counterbalance System: PVC coated, 1/8 inch diameter stainless steel aircraft cable with attached single sash counter weight.
1)	Cable Pulley System: 2 inch diameter nylon ball bearing.
c.	Full width finger sash pull.
d.	Lifting force of no more than 5 pounds.
1)	Sash cable runs through bottom of sash to prevent.
e.	Adjustable turnbuckle for leveling counterweight/sash.
14.	Sash Assembly: Combination Sash.
a.	Vertical viewing with horizontal sliding doors.
b.	Sliding panels constructed of clear tempered safety glass set into a stainless steel frame.
c.	Allows for both horizontal and vertical movement options to the end user.
d.	Counterbalance System: Two PVC coated, 1/8 inch diameter stainless steel aircraft cable with attached single sash counter weight.
1)	Cable Pulley System: 2 inch diameter nylon ball bearing.
e.	Lifting force of no more than 5 pounds.
1)	Sash cable runs through bottom of sash to prevent.
f.	Adjustable turnbuckle for leveling counterweight/sash.
15.	Sash Assembly: Horizontal Sliding Sash.
a.	Anodized aluminum top rail and bottom track.
b.	Bottom supported.
c.	Sliding panels shall be framed with anodized aluminum frame on top and a bottom supported aluminum rolling frame.
d.	Standard clear tempered safety glass panels set into an aluminum track.
e.	Housed within the stainless steel rail.
16.	Illumination of Work Area: Area inside the superstructure from side to side, from face of baffle to inside face of sash, and from working surface to a height of 35 inches.
a.	Minimum Illumination: 80 foot candles.
b.	Fixtures: 2 tube LED fixture:
1)	36 inch hood: 24 inch.
2)	48 inch hood: 24 inch.
3)	60 inch hood: 36 inch.
4)	72 inch hood: 48 inch.
5)	96 inch hood: (2) 36 inch.
6)	UL and CSA listed.
7)	Mounted fixture with removable stainless steel light bracket with mirrored finish.
8)	Clear tempered safety glass panel provides vapor-tight barrier and seal to separate the fixture from the hood interior.
9)	Explosion-proof fixture: Class I Division II.
10)	Explosion-proof fixture: Class I Division I.
C.	Materials:
1.	HiPel Composite: Two white surfaces chemically bonded to a fiberglass reinforced core layer of thermosetting resin. No exposed fiberglass.
a.	Nominal Thickness: 4.5 mm.
b.	Meets or exceeds NFPA 45.
2.	Sash Glass: 3/16 inch clear Tempered Safety Glass per ASTM C 1048.
3.	Sash Glass: 1/4 inch clear Laminated Safety Glass per ASTM C 1172.
4.	Sash Glass: 3/16 inch clear Polycarbonate Safety Glass.
5.	Sash Glass: 1/4 inch clear Polycarbonate Safety Glass.
D.	Fasteners:
1.	Interior Surfaces: PVC-capped No. 8 pan stainless steel screws and nylon bolts.
2.	Exterior Structural Members: No. 8 pan stainless steel screws and nylon bolts.
E.	Work Surfaces:
1.	Epoxy Resin: 1-1/4 inches thick, molded to contain chemical spillage, dished section not less than 1/4 inch thick. Black.
2.	Phenolic Resin: 1-1/4 inches thick, molded to contain chemical spillage, dished section not less than 1/4 inch thick. Charcoal.
3.	316 Stainless Steel: 6 gauge, No. 4 finish, dished construction with marine edge, dished section not less than 1/4 inch thick.
4.	304 Stainless Steel: 16 gauge, No. 4 finish, dished construction with marine edge, dished section not less than 1/4 inch thick.
F.	Base Cabinets and Tables:
1.	Base Cabinet: Constructed of furniture grade steel. With adjustable shelf and levelers.
2.	Acid Cabinet: Interior lined with one-piece acid resistant white composite resin liner with all covered corners for superior corrosion resistance. With vents and fixed shelf.
3.	Flammable Cabinet: Provides safe storage of flammables. Constructed of welded double wall furniture grade steel. With adjustable shelf and locking hinged doors. Meets NFPA codes.
4.	Fume Hood Base Table: Heavy duty, all welded 2 inch square tube steel construction. Each leg has levelers with fitted black boots.
a.	Bench Height: 35 inches.
b.	Sitting Height: 28 inches.
2.4	CE SERIES FUME HOODS
A.	Basis of Design: UniFlow CE Series by HEMCO Corporation.
B.	Components:
1.	Face Opening: Molded aerodynamic opening with upper and lower airfoils to minimize air flow turbulence and provide a constant volume of air flow.
2.	Baffle System: VaraFlow design with Vector slots:
a.	Material: HiPel composite resin.
b.	Fume hood shall effectively maintain safe, constant exhaust volume at any baffle position.
c.	Constructed of upper, middle, and lower sections.
d.	Positioned such that horizontal and vertical edge slots effectively create near laminar air flow through the fume chamber.
e.	Factory set such that the fume hood is at its optimum performance level.
f.	Lower Baffle: Staggered slotted array.
g.	Rounded edges to raw fumes smoothly through baffle system.
h.	Removable for cleaning.
3.	Exhaust Collar: Integral, bell shaped.
a.	Standard round collars.
b.	Same HiPel material as hood structure.
c.	Chemically bonded to the fume chamber ceiling.
d.	30 inch hood: 1-6 inch diameter.
e.	36 inch hood: 1-6 inch diameter.
f.	48 inch hood: 1-8 inch diameter.
g.	72 inch hood: 1-10 inch diameter.
4.	Component Fume Chamber: One piece, molded.
a.	Liner: Non-conducting white HiPel, 3/16 inch nominal thickness. Molded one piece seamless with coved corners.
1)	Chemical resistant.
2)	Flame resistant. Meets UL 1805 and NFPA 45.
b.	Smooth finish for ease of cleaning.
c.	Interior Vertical Clearance: 35 inches nominal.
5.	Air Bypass: Automatic air bypass to provide a constant air volume.
a.	When the sash is closed, upper bypass and lower bypass is drawing 100 percent of the supply air.
b.	As the sash is raised, the upper bypass begins to close and is completely closed when the sash reaches the full open position.
6.	Superstructure and Mold Liner Material: Unitized composite construction for total chemical resistance, strength, durability and reduced weight:
a.	Material: HiPel, white thermosetting resin surface layers with fiberglass reinforced composite core, 3/16 inch thick.
b.	Side Walls: 5 inches wide, chemically bonded to liner.
c.	Materials are tested and classified by U.L. for Class A fire resistant, non-metallic materials used in laboratories.
7.	Fascia Posts: Aerodynamically angled to provide uniform air flow in the fume chamber. Continuation of the one piece HiPel liner.
8.	Removable Front Panel: Located above the sash allows access to electrical connections, light bulb change out, sash weights and duct connections.
9.	Exterior Side Panels: Unitized and chemically bonded to form homogeneous one piece superstructure. HiPel resin.
10.	Air Foil:
a.	Material: HiPel composite resin, non-conducting.
b.	Smooth color finish.
1)	Color: _____.
c.	Air foil across lower sash to provide clean sweep of air over work surface.
d.	One inch air bypass inlet under air foil to insure uniform air flow at face and to sweep heavier than air vapors off work surface.
e.	Upper airfoil provides clean flow of air in upper area of the fume chamber to minimize turbulent air flow through the fume chamber.
11.	Sash: Full view, vertical raising, picture frame sash: 
a.	Glazing: Clear tempered safety glass.
b.	Glazing: Clear laminated safety glass.
c.	Glazing: Clear polycarbonate.
d.	Frame, Track, and Pull: Chemical resistant PVC.
e.	Counterbalance System: PVC coated, 1/8 inch diameter stainless steel aircraft cable with two sash counter weights.
1)	Cable Pulley System: 1-3/4 inch diameter black delrin pulley wheel.
f.	Full width finger sash pull.
g.	Lifting force of no more than 5 pounds.
h.	Sash cable runs through bottom of sash to prevent sash from dropping.
i.	Adjustable counterweight for tilting adjustment.
12.	Illumination of Work Area: Area inside the superstructure from side to side, from face of baffle to inside face of sash, and from working surface to a height of 35 inches.
a.	Minimum Illumination: 80 foot candles.
b.	Fixtures: Vapor proof threaded bulb 100 watt fixture:
1)	UL and CSA listed.
2)	Clear glass threaded globe accessed from inside the fume chamber for bulb change out.
3)	Explosion-proof fixture: Class I Division II.
4)	Explosion-proof fixture: Class I Division I.
C.	Materials:
1.	HiPel Composite: Two white surfaces chemically bonded to a fiberglass reinforced core layer of thermosetting resin. No exposed fiberglass.
a.	Nominal Thickness: 4.5 mm.
b.	Meets or exceeds NFPA 45.
2.	Sash Glass: 3/16 inch clear Tempered Safety Glass per ASTM C 1048.
3.	Sash Glass: 1/4 inch clear Laminated Safety Glass per ASTM C 1172.
4.	Sash Glass: 3/16 inch clear Polycarbonate Safety Glass.
5.	Sash Glass: 1/4 inch clear Polycarbonate Safety Glass.
D.	Fasteners:
1.	Interior Surfaces: PVC-capped No. 8 pan stainless steel screws and nylon bolts.
2.	Exterior Structural Members: No. 8 pan stainless steel screws and nylon bolts.
E.	Work Surfaces:
1.	Composite Resin: 1-1/4 inches thick, molded to contain chemical spillage, dished section not less than 1/4 inch thick. Gray.
2.	Epoxy Resin: 1 inch thick, flat, not dished. Black.
3.	Phenolic Resin: 1 inch thick flat, not dished. Black.
4.	304 Stainless Steel: 16 gauge, No. 4 finish, dished construction with marine edge, dished section not less than 1/4 inch thick.
F.	Base Cabinets and Tables:
1.	Base Cabinet: Constructed of furniture grade steel. With adjustable shelf and levelers.
2.	Acid Cabinet: Interior lined with one-piece acid resistant white composite resin liner with all covered corners for superior corrosion resistance. With vents and fixed shelf.
3.	Flammable Cabinet: Provides safe storage of flammables. Constructed of welded double wall furniture grade steel. With adjustable shelf and locking hinged doors. Meets NFPA codes.
4.	Fume Hood Base Table: Heavy duty, all welded 2 inch square tube steel construction. Each leg has levelers with fitted black boots.
a.	Bench Height: 35 inches.
b.	Sitting Height: 28 inches.
2.5	SE FM FLOOR MOUNT FUME HOODS
A.	Basis of Design: UniFlow SE FM Floor Mount (Walk-In) Series by HEMCO Corporation.
B.	Components:
1.	Face Opening: Molded aerodynamic opening with upper and lower airfoils to minimize air flow turbulence and provide a constant volume of air flow.
2.	Baffle System: VaraFlow design with Vector slots:
a.	Material: HiPel composite resin.
b.	Fume hood shall effectively maintain safe, constant exhaust volume at any baffle position.
c.	Constructed of upper, middle, and lower sections.
d.	Positioned such that horizontal and vertical edge slots effectively create near laminar air flow through the fume chamber.
e.	Factory set such that the fume hood is at its optimum performance level.
f.	Lower Baffle: Staggered slotted array.
g.	Rounded edges to raw fumes smoothly through baffle system.
h.	Removable for cleaning.
3.	Exhaust Collar: Integral, bell shaped.
a.	Standard 12 inch round collars.
b.	Same HiPel material as hood structure.
c.	Chemically bonded to the fume chamber ceiling.
4.	Component Fume Chamber: One piece, molded.
a.	Liner: Non-conducting white HiPel, 3/16 inch nominal thickness. Constructed with a modular design allowing hood to be assembled in the field.
1)	Chemical resistant.
2)	Flame resistant. Meets UL 1805 and NFPA 45.
b.	Smooth finish for ease of cleaning.
c.	Interior Vertical Clearance: 82 inches nominal.
5.	Constant Air Volume (CAV) Model: Automatic air bypass to provide a constant air volume.
a.	When the sashes are closed, upper bypass and lower bypass is drawing 100 percent of the supply air.
b.	As the upper sash is raised, the upper bypass begins to close and is completely closed when the sash reaches the full open position.
6.	Variable Air Volume (VAV) Model: Restricted air bypass:
a.	With a design face velocity set, the air volume changes as the sashes are raised or lowered.
b.	A minimum flow of 25 CFM per square foot of surface is recommended by the NFPA when the sash is closed.
7.	Superstructure and Mold Liner Material: Modular composite construction for total chemical resistance, strength, durability and reduced weight:
a.	Material: HiPel, white thermosetting resin surface layers with fiberglass reinforced composite core, 3/16 inch thick.
b.	Side Walls: 5 inches wide, chemically bonded creating a unitized right and left double wall superstructure.
c.	Materials are tested and classified by U.L. for Class A fire resistant, non-metallic materials used in laboratories.
8.	Fascia Posts: Aerodynamically angled to provide uniform air flow in the fume chamber. 
9.	Removable Front Panel: Located above the sash allows access to electrical connections, light bulb change out, sash weights and duct connections.
10.	Exterior Side Panels: Unitized and chemically bonded to form homogeneous one piece side wall superstructure. HiPel resin.
a.	One inch air gap inlet under lower sash to insure uniform air flow at face and to sweep heavier than air vapors off floor.
b.	Upper airfoil provides clean flow of air in upper area of the fume chamber to minimize turbulent air flow through the fume chamber.
11.	Sash Height: 62 inches.
12.	Viewing Height: 70 inches.
13.	Interior Height: 82 inches.
14.	Sash: 
a.	Glazing: Clear tempered safety glass.
b.	Counter balanced, connected with coated stainless steel cables.
c.	PVC framing track and aerodynamic sash lift.
15.	Sash Assembly: Double Vertical.
16.	Sash Assembly: Horizontal Sliding Sash.
17.	Illumination of Work Area: Area inside the superstructure from side to side, from face of baffle to inside face of sash, and from working surface to a height of 52 inches.
a.	Minimum Illumination: 80 foot candles.
b.	Fixtures: 2 tube LED fixture:
1)	48 inch hood: 24 inch.
2)	60 inch hood: 36 inch.
3)	72 inch hood: 48 inch.
4)	96 inch hood: (2) 36 inch.
5)	UL and CSA listed.
6)	Mounted fixture with removable stainless steel light bracket with mirrored finish.
7)	Clear tempered safety glass panel provides vapor-tight barrier and seal to separate the fixture from the hood interior.
8)	Explosion-proof fixture: Class I Division II.
9)	Explosion-proof fixture: Class I Division I.
C.	Materials:
1.	HiPel Composite: Two white surfaces chemically bonded to a fiberglass reinforced core layer of thermosetting resin. No exposed fiberglass.
a.	Nominal Thickness: 4.5 mm.
b.	Meets or exceeds NFPA 45.
2.	Sash Glass: 3/16 inch clear Tempered Safety Glass per ASTM C 1048.
3.	Sash Glass: 1/4 inch clear Laminated Safety Glass per ASTM C 1172.
4.	Sash Glass: 3/16 inch clear Polycarbonate Safety Glass.
5.	Sash Glass: 1/4 inch clear Polycarbonate Safety Glass.
D.	Fasteners:
1.	Interior Surfaces: PVC-capped No. 8 pan stainless steel screws and nylon bolts.
2.	Exterior Structural Members: No. 8 pan stainless steel screws and nylon bolts.
E.	Work Surfaces:
1.	Epoxy Resin: 1-1/4 inches thick, molded to contain chemical spillage, dished section not less than 1/4 inch thick. Black.
2.	Phenolic Resin: 1-1/4 inches thick, molded to contain chemical spillage, dished section not less than 1/4 inch thick. Charcoal.
3.	316 Stainless Steel: 6 gauge, No. 4 finish, dished construction with marine edge, dished section not less than 1/4 inch thick.
4.	304 Stainless Steel: 16 gauge, No. 4 finish, dished construction with marine edge, dished section not less than 1/4 inch thick.
2.6	SE DUAL ENTRY SERIES.
A.	Basis of Design: SE Dual Entry Series by HEMCO Corporation.
B.	Design: Superstructure to be modular composite chemical resistant FRP non-metal construction. Interior fume chamber to be glass-smooth with bell shaped exhaust collar. Picture frame sash opening constructed of clear tempered safety glass with chemical resistant framing and track. Vapor proof light fixture and control switch are wired to a single point junction box, 115/60Hz, AC. Electrical components are U.L. listed.
C.	Size: 
1.	Hood Depth: 30 inches (762 mm).
2.	Hood Depth: 36 inches (914 mm).
3.	Hood Depth: 48 inches (1219 mm).
4.	Hood Width: 48 inches (1219 mm).
5.	Hood Width: 60 inches (1524 mm).
6.	Hood Width: 72 inches (1829 mm).
7.	Hood Width: 96 inches (2438 mm)
D.	Illumination of Work Area: Area inside the superstructure from side to side, from face of baffle to inside face of sash, and from working surface to a height of 35 inches.
1.	Minimum Illumination: 80 foot candles.
2.	Fixtures: Vapor proof threaded bulb 100 watt fixture:
a.	UL and CSA listed.
b.	Clear glass threaded globe accessed from inside the fume chamber for bulb change out.
c.	Explosion-proof fixture: Class I Division II.
d.	Explosion-proof fixture: Class I Division I.
E.	Components:
1.	Unitized dual wall construction for chemical resistance, strength, and durability. Meets NFPA-45 classification with flame spread of less than 25 per ASTM E-84.
a.	Access Panel: Removable to access ducting connections, plumbing and electrical services from a single point electrical box, 115/60Hz AC operation.
2.	Sash: Picture frame sash: 
a.	Glazing: 3/16 inch (4.8 mm) clear tempered safety glass.
3.	Sash Assembly: Horizontal Sliding Sash (Standard).
a.	28 inches (711 mm) sash opening height for ease of access and viewing tall apparatus setup. Sash is tempered safety glass, with chemical resistant non-metallic PVC framing, track, and aerodynamic sash lift (horizontal sash). Sash handle for efficient air flow and ease of movement. 
4.	Sash Assembly: Full view, vertical rising.
a.	28 inches (711 mm) sash opening height for ease of access and viewing tall apparatus setup. Sash is tempered safety glass, with chemical resistant non-metallic PVC framing, track, and aerodynamic sash lift.
5.	Side View Windows: Installed on right or left sides.
a.	Side View Window 16 inches X 20 inches (406 mm X 508 mm).
b.	Side View Window 24 inches X 20 inches (610 mm X 508 mm).
6.	Air Flow Monitor with Repeater.
a.	Flush mounted air flow Monitor features a back lit display which displays the air flow velocity or air flow status.
F.	Work Surfaces:
1.	Epoxy Resin: 1-1/4 inches thick, molded to contain chemical spillage, dished section not less than 1/4 inch thick. Black.
2.	Phenolic Resin: 1-1/4 inches thick, molded to contain chemical spillage, dished section not less than 1/4 inch thick. Charcoal.
G.	Base Cabinet: Standard cabinet with a finished rear panel assembly.
H.	Base Cabinet: Two cabinets back-to-back plus filler panels allowing cabinet access from both sides.
2.7	LE FM SERIES FUME HOODS
A.	Basis of Design: UniFlow LE FM Distillation Series by HEMCO Corporation.
B.	Components:
1.	Face Opening: Molded aerodynamic opening with upper and lower airfoils to minimize air flow turbulence and provide a constant volume of air flow.
2.	Baffle System: VaraFlow design with Vector slots:
a.	Material: HiPel composite resin.
b.	Fume hood shall effectively maintain safe, constant exhaust volume at any baffle position.
c.	Constructed of upper, middle, and lower sections.
d.	Positioned such that horizontal and vertical edge slots effectively create near laminar air flow through the fume chamber.
e.	Factory set such that the fume hood is at its optimum performance level.
f.	Lower Baffle: Staggered slotted array.
g.	Rounded edges to raw fumes smoothly through baffle system.
h.	Removable for cleaning.
3.	Exhaust Collar: Integral, bell shaped.
a.	Standard 12 inch round collars.
b.	Same HiPel material as hood structure.
c.	Chemically bonded to the fume chamber ceiling.
4.	Component Fume Chamber: One piece, molded.
a.	Liner: Non-conducting white HiPel, 3/16 inch nominal thickness. Constructed with a modular design allowing hood to be assembled in the field.
1)	Chemical resistant.
2)	Flame resistant. Meets UL 1805 and NFPA 45.
b.	Smooth finish for ease of cleaning.
c.	Interior Vertical Clearance: 78 inches nominal.
5.	Constant Air Volume (CAV) Model: Automatic air bypass to provide a constant air volume.
a.	When the sashes are closed, upper bypass and lower bypass is drawing 100 percent of the supply air.
b.	As the upper sash is raised, the upper bypass begins to close and is completely closed when the sash reaches the full open position.
6.	Variable Air Volume (VAV) Model: Restricted air bypass:
a.	With a design face velocity set, the air volume changes as the sashes are raised or lowered.
b.	A minimum flow of 25 CFM per square foot of surface is recommended by the NFPA when the sash is closed.
7.	Superstructure and Mold Liner Material: Modular composite construction for total chemical resistance, strength, durability and reduced weight:
a.	Material: HiPel, white thermosetting resin surface layers with fiberglass reinforced composite core, 3/16 inch thick.
b.	Side Walls: 5 inches wide, chemically bonded creating a unitized right and left double wall superstructure.
c.	Materials are tested and classified by U.L. for Class A fire resistant, non-metallic materials used in laboratories.
8.	Fascia Posts: Aerodynamically angled to provide uniform air flow in the fume chamber.
9.	Removable Front Panel: Located above the sash allows access to electrical connections, light bulb change out, sash weights and duct connections.
10.	Exterior Side Panels: Unitized and chemically bonded to form homogeneous one piece superstructure. HiPel resin.
a.	One inch air gap inlet under lower sash to insure uniform air flow at face and to sweep heavier than air vapors off floor.
b.	Upper airfoil provides clean flow of air in upper area of the fume chamber to minimize turbulent air flow through the fume chamber.
11.	Sash Height: 62 inches.
12.	Viewing Height: 68 inches.
13.	Interior Height: 78 inches.
14.	Sash: 
a.	Glazing: Clear tempered safety glass.
b.	Counter balanced, connected with coated stainless steel cables.
c.	PVC framing track and aerodynamic sash lift.
15.	Sash Assembly: Double Vertical.
16.	Sash Assembly: Horizontal Sliding Sash.
17.	Illumination of Work Area: Area inside the superstructure from side to side, from face of baffle to inside face of sash, and from working surface to a height of 82 inches.
a.	Minimum Illumination: 80 foot candles.
b.	Fixtures: 2 tube LED fixture:
1)	48 inch hood: 24 inch.
2)	60 inch hood: 36 inch.
3)	72 inch hood: 48 inch.
4)	96 inch hood: (2) 36 inch.
5)	UL and CSA listed.
6)	Mounted fixture with removable stainless steel light bracket with mirrored finish.
7)	Clear tempered safety glass panel provides vapor-tight barrier and seal to separate the fixture from the hood interior.
8)	Explosion-proof fixture: Class I Division II.
9)	Explosion-proof fixture: Class I Division I.
C.	Materials:
1.	HiPel Composite: Two white surfaces chemically bonded to a fiberglass reinforced core layer of thermosetting resin. No exposed fiberglass.
a.	Nominal Thickness: 4.5 mm.
b.	Meets or exceeds NFPA 45.
2.	Sash Glass: 3/16 inch clear Tempered Safety Glass per ASTM C 1048.
3.	Sash Glass: 1/4 inch clear Laminated Safety Glass per ASTM C 1172.
4.	Sash Glass: 3/16 inch clear Polycarbonate Safety Glass.
5.	Sash Glass: 1/4 inch clear Polycarbonate Safety Glass.
D.	Fasteners:
1.	Interior Surfaces: PVC-capped No. 8 pan stainless steel screws and nylon bolts.
2.	Exterior Structural Members: No. 8 pan stainless steel screws and nylon bolts.
E.	Work Surfaces:
1.	Epoxy Resin: 1-1/4 inches thick, molded to contain chemical spillage, dished section not less than 1/4 inch thick. Black.
2.	Phenolic Resin: 1-1/4 inches thick, molded to contain chemical spillage, dished section not less than 1/4 inch thick. Charcoal.
3.	316 Stainless Steel: 6 gauge, No. 4 finish, dished construction with marine edge, dished section not less than 1/4 inch thick.
4.	304 Stainless Steel: 16 gauge, No. 4 finish, dished construction with marine edge, dished section not less than 1/4 inch thick.
2.8	LE DUAL ENTRY SERIES
A.	Basis of Design: LE Dual Entry Series by HEMCO Corporation.
B.	Design: Superstructure to be modular composite chemical resistant FRP non-metal construction. Interior fume chamber to be glass-smooth with bell shaped exhaust collar. Picture frame sash opening constructed of clear tempered safety glass with chemical resistant framing and track. Vapor proof light fixture and control switch are wired to a single point junction box, 115/60Hz, AC. Electrical components are U.L. listed.
C.	Size: 
1.	Hood Depth: 30 inches (762 mm).
2.	Hood Depth: 36 inches (914 mm).
3.	Hood Depth: 48 inches (1219 mm).
4.	Hood Width: 48 inches (1219 mm).
5.	Hood Width: 60 inches (1524 mm).
6.	Hood Width: 72 inches (1829 mm).
7.	Hood Width: 96 inches (2438 mm)
D.	Illumination of Work Area: Area inside the superstructure from side to side, from face of baffle to inside face of sash, and from working surface to a height of 35 inches.
1.	Minimum Illumination: 80 foot candles.
2.	Fixtures: Vapor proof threaded bulb 100 watt fixture:
a.	UL and CSA listed.
b.	Clear glass threaded globe accessed from inside the fume chamber for bulb change out.
c.	Explosion-proof fixture: Class I Division II.
d.	Explosion-proof fixture: Class I Division I.
E.	Components:
1.	Unitized dual wall construction for chemical resistance, strength, and durability. Meets NFPA-45 classification with flame spread of less than 25 per ASTM E-84.
a.	Access Panel: Removable to access ducting connections, plumbing and electrical services from a single point electrical box, 115/60Hz AC operation.
2.	Sash: Picture frame sash: 
a.	Glazing: 3/16 inch (4.8 mm) clear tempered safety glass.
3.	Sash Assembly: Horizontal Sliding Sash (Standard).
a.	28 inches (711 mm) sash opening height for ease of access and viewing tall apparatus setup. Sash is tempered safety glass, with chemical resistant non-metallic PVC framing, track, and aerodynamic sash lift (horizontal sash). Sash handle for efficient air flow and ease of movement. 
4.	Sash Assembly: Full view, vertical rising.
a.	28 inches (711 mm) sash opening height for ease of access and viewing tall apparatus setup. Sash is tempered safety glass, with chemical resistant non-metallic PVC framing, track, and aerodynamic sash lift.
5.	Side View Windows: Installed on right or left sides.
a.	Side View Window 16 inches X 20 inches (406 mm X 508 mm).
b.	Side View Window 24 inches X 20 inches (610 mm X 508 mm).
6.	Air Flow Monitor with Repeater.
a.	Flush mounted air flow Monitor features a back lit display which displays the air flow velocity or air flow status.
F.	Work Surfaces:
1.	Epoxy Resin: 1-1/4 inches thick, molded to contain chemical spillage, dished section not less than 1/4 inch thick. Black.
2.	Phenolic Resin: 1-1/4 inches thick, molded to contain chemical spillage, dished section not less than 1/4 inch thick. Charcoal.
G.	Base Cabinet: Standard cabinet with a finished rear panel assembly.
H.	Base Cabinet: Two cabinets back-to-back plus filler panels allowing cabinet access from both sides.
2.9	PERCHLORIC ACID FUME HOODS
A.	Basis of Design: Perchloric Acid Fume Hood Series by HEMCO Corporation.
B.	Design: Seamless fume chamber with integral work surface and drainage trough with baffle and exhaust collar. Hood has built-in wash down system with spray nozzles and piping to front mounted control valve. Picture frame sash opening with counterbalanced clear tempered safety glass sash with chemical resistant PVC framing, track, and aerodynamic sash lift. Explosion-proof light fixture Cat. No. 50034, installed but not wired, 115/230V, 50/60Hz AC. Class I Div II Groups A B C D, Class II Div II Groups. F and G, all electrical components UL listed.
C.	Size: 
1.	Hood Depth: 30 inches (762 mm).
2.	Hood Depth: 36 inches (914 mm).
3.	Hood Width: 48 inches (1219 mm).
4.	Hood Width: 60 inches (1524 mm).
5.	Hood Width: 72 inches (1829 mm).
D.	Components:
1.	Constructed of unitized dual wall construction for superior chemical resistance, strength, and durability. Rear drain trough is integral to superstructure. Dedicated wash down with integral piping spray nozzles and remote control on right column. One-piece interior fume chamber and baffle. Meets NFPA-45 classification with flame spread of less than 25 per ASTM E-84.
a.	Superstructure Material: HiPel composite resin.
b.	Interior Fume Chamber Material: PVC.
c.	Interior Fume Chamber Material: 316 stainless steel.
2.	Work Surface: Integral PVC work surface.
3.	Work Surface: Integral 316 stainless steel work surface.
4.	Access Panel: Removable to access ducting connections, plumbing and electrical services from a single point electrical box, 115/230V, 50/60Hz AC operation. 
5.	Energy efficient explosion proof light fixture with light switch on left column, all factory installed.
6.	Sash: Picture frame sash: 
a.	Glazing: 3/16 inch (4.8 mm) clear tempered safety glass.
7.	Sash Assembly: Full view, vertical rising.
a.	28 inches (711 mm) sash opening height provides ease of access for apparatus set-up in fume chamber. 44 inches (1118 mm) interior working height. Sash is counter balanced, tempered safety glass, coated stainless steel cable with stainless steel pulley assembly. Framed in nonmetallic PVC framing, track, and aerodynamic sash lift for ease of movement and air flow efficiency.
b.	Sash Stop: Located at 1/2 open position to reduce air flow 50 percent.
8.	Air Flow Monitor with Repeater.
a.	Flush mounted air flow Monitor features a back lit display which displays the air flow velocity or air flow status.
E.	Perchloric Acid Exhaust Blowers:
1.	Blowers are constructed of fluoropolymer coated steel, belt driven, includes explosion proof motor, non-sparking wheel, spray wash nozzle and drain in the blower housing. Engineering based on 120 FPM face velocity.
2.	Provide stainless steel stack outlet with wash down nozzles.
F.	Base Cabinet: Standard cabinet constructed of furniture grade steel with adjustable shelf and levelers.
2.10	ACID DIGESTION FUME HOODS
A.	Basis of Design: Acid Digestion Fume Hood Series by HEMCO Corporation.
B.	Design: Seamless HDPE fume chamber with integral work surface and drainage trough, all coved corners with baffle and exhaust collar. Hood has built-in wash down system with spray nozzles and piping to front mounted control valve. Picture frame sash opening with counterbalanced clear polycarbonate sash with chemical resistant PVC framing and track and aerodynamic sash lift. Vapor proof LED light fixture and control switch are wired to a single point junction box, 115/60Hz, AC. All electrical components are U.L. listed.
C.	Size: 
1.	Hood Depth: 30 inches (762 mm).
2.	Hood Depth: 36 inches (914 mm).
3.	Hood Depth: 48 inches (1219 mm).
4.	Hood Width: 48 inches (1219 mm).
5.	Hood Width: 60 inches (1524 mm).
6.	Hood Width: 72 inches (1829 mm).
7.	Hood Width: 96 inches (2438 mm)
D.	Components:
1.	Superstructure: HiPel resin exclusive unitized dual wall construction for superior chemical resistance (NO RUST), strength, and durability. Vent outlet is integral to superstructure and is available in HDPE lined hoods..
a.	Access Panel: Removable to access ducting connections, plumbing and electrical services from a single point electrical box, 115/60Hz AC operation.
2.	Fume Chamber and Baffle: Constructed with HDPE liner. The one-piece liner is engineered to resist reactions from corrosive chemicals that don't require high temperatures.
3.	Work Surface: Welded integral to the fume hood superstructure and dished to contain spillage and includes welded in rear drain trough. A sink if indicated and required the work surface would allow the HDPE sink to be welded in.
4.	Access Panel: Removable to access ducting connections and electrical services from a single point electrical box, 115/60Hz AC
5.	Vapor proof LED light fixture and control switch shall be wired to a single point junction box, 115/60Hz, AC. Electrical components are U.L. listed.
6.	Sash: Picture frame sash: 
a.	Glazing: 1/4 inch (6 mm) polycarbonate sheet.
7.	Sash Assembly: Full view, vertical rising.
a.	28 inches (711 mm) sash opening height provides ease of access for apparatus set-up in fume chamber. 44 inches (1118 mm) interior working height. Sash is counter balanced, tempered safety glass, coated stainless steel cable with stainless steel pulley assembly. Framed in nonmetallic PVC framing, track, and aerodynamic sash lift for ease of movement and air flow efficiency.
8.	Sash Stop: Located at 1/2 open position to reduce air flow 50 percent.
9.	Exhaust Blower: Polypro belt driven, include TEFC motors and a spray wash nozzle and drain in the blower housing. 
10.	Wash Down System: Hood shall be equipped with spray nozzles, piping, valve and rear drain trough for rinsing wash down after usage.
11.	Air Flow Monitor:
a.	Continuously monitors face velocity air flow, meets ANSI and OSHA requirements.
E.	Base Cabinet: Standard cabinet constructed of furniture grade steel with adjustable shelf and levelers.
2.11	TRACE METALS FUME HOODS
A.	Basis of Design: Trace Metals Fume Hood Series by HEMCO Corporation.
B.	Design: Welded one piece polypro fume chamber with integral work surface, baffle and exhaust collar. Picture frame sash opening with horizontal sliding with chemical resistant PVC framing and track and aerodynamic sash lift. Vapor-proof light fixture and switch pre-wired to single point PVC junction box, 115/60Hz AC. Electrical components U.L. listed. 
C.	Size: 
1.	Hood Depth: 30 inches (762 mm).
2.	Hood Depth: 36 inches (914 mm).
3.	Hood Width: 48 inches (1219 mm).
4.	Hood Width: 60 inches (1524 mm).
5.	Hood Width: 72 inches (1829 mm).
6.	Hood Width: 96 inches (2438 mm)
D.	Components:
1.	Superstructure: Welded one-piece polypropylene fume chamber with integral worksurface with baffle and exhaust collar, creating a chemical resistant, dual wall construction. Meets NFPA 45 requirements for flame spread.
a.	Access Panel: Removable to access ducting connections, plumbing and electrical services from a single point electrical box, 115/60Hz AC operation.
2.	Fume Chamber: Constructed with polypropylene surface is chemical resistant white, glass smooth for ease of cleaning and light reflectivity.
3.	Baffle System: VaraFlow constructed of polypropylene, maintains uniform air flow thru the fume chamber to exhaust collar outlet.
4.	Work Surface: Welded integral to the fume hood superstructure and dished to contain spillage and includes welded in rear drain trough. A sink if indicated and required the work surface would allow the HDPE sink to be welded in.
5.	Access Panel: Removable to access ducting connections and electrical services from a single point electrical box, 115/60Hz AC.
6.	Vapor proof non-metallic light fixture with light switch on left column, with PVC conduit and junction box.
7.	Sash: Picture frame sash: 
a.	Glazing: 3/16 inch (4.8 mm) clear tempered safety glass.
8.	Sash Assembly: Horizontal Sliding Sash.
a.	28 inches (711 mm) sash opening height for ease of access and viewing tall apparatus setup. Sash is tempered safety glass, with chemical resistant non-metallic PVC framing, track, and aerodynamic sash lift (horizontal sash). Sash handle for efficient air flow and ease of movement. 
9.	Trace Metals Exhaust Blower: High efficiency impellers produce low power consumption, reduced operating costs and quiet operation. 20 forward curved blades in fire retardant polypropylene. Non-static and oil resistant V-belt, cast iron pulleys, adjustable pulleys available, adjustment for tensioning and belt replacement. Chemical resistant for hostile or hazardous environments .115V single phase or three phase.
10.	Air Flow Monitor:
a.	Continuously monitors face velocity air flow, meets ANSI and OSHA requirements.
E.	Base Cabinet: Standard cabinet.
1.	Base Cabinets constructed of chemical resistant polypropylene with welded seams and overlapping doors.
2.	Cabinets equipped with a lower lip to contain chemical spills.
2.12	RADIOISOTOPE FUME HOODS.
A.	Basis of Design: Radioisotope Fume Hood Series by HEMCO Corporation.
B.	Design: Seamless type 304 stainless steel fume chamber with integral work surface all coved corners with baffle and exhaust collar. Picture frame sash opening with counterbalanced clear tempered safety glass sash with chemical resistant stainless steel framing, track, and aerodynamic sash lift. Vapor proof LED light fixture and control switch are wired to a single point junction box, 115/60Hz, AC All electrical components are U.L. listed. 
C.	Size: 
1.	Hood Depth: 30 inches (762 mm).
2.	Hood Width: 48 inches (1219 mm).
3.	Hood Width: 60 inches (1524 mm).
4.	Hood Width: 72 inches (1829 mm).
D.	Components:
1.	Superstructure: non-metallic FRP composite construction for total chemical resistance, superior durability and long life. Interior fume chamber to be glass-smooth with VaraFlow baffle system and bell shaped exhaust collar. Meets NFPA 45 requirements for flame spread.
a.	Air foil and work surface shall be constructed of type 304 stainless steel.
b.	Access Panel: Removable to access ducting connections, plumbing and electrical services from a single point electrical box, 115/60Hz AC operation.
2.	Fume Chamber: Constructed 304 stainless steel, No. 4 satin finish.
3.	Baffle System: VaraFlow constructed of Type 304 stainless steel, maintains uniform air flow thru the fume chamber to exhaust collar outlet.
4.	Work Surface: Welded integral to the fume hood superstructure and dished to contain spillage.
5.	Access Panel: Removable to access ducting connections and electrical services from a single point electrical box, 115/60Hz AC.
6.	Sash: Picture frame sash: 
a.	Glazing: 3/16 inch (4.8 mm) clear tempered safety glass.
7.	Sash Assembly: Full view, vertical rising.
a.	28 inches (711 mm) sash opening height provides ease of access for apparatus set-up in fume chamber. 44 inches (1118 mm) interior working height. Sash is counter balanced, tempered safety glass, coated stainless steel cable with stainless steel pulley assembly. Framed in Type 304 stainless steel framing, track, and aerodynamic sash lift for ease of movement and air flow efficiency.
8.	Radioisotope Exhaust Blower: V-belt drive stainless steel blower with adjustable shelves, thermal overload protection, and weather cover. The design is based on 100 FPM face velocity.
9.	HEPA Filter Bag-In/Bag-Out Filter: Contained within a type 304 stainless steel housing with bag-in/bag-out attachment and pre-filter. HEPA is 99.99 percent efficient and the pre-filter is 30 percent efficient. Filter is rated at 1000 CFM. One filter required for 48 inches (1219 mm) and 60 inches (1524 mm) hoods; 2 filters required for 72 inches (1829 mm) hoods.
10.	Carbon Filter Bag-In/Bag-Out Filter: Contained within a type 304 stainless steel housing with bag in, bag out attachment and pre-filter. Filter rated at 1000 CFM. One filter required for 48 inches (1219 mm) and 60 inches (1524 mm) hoods; 2 filters required for 72 inches (1829 mm) hoods.
11.	Air Flow Monitor: Continuously monitors face velocity air flow, meets ANSI and OSHA requirements.
E.	Base Cabinet: Standard cabinet constructed of furniture grade steel with adjustable shelf and levelers.
2.13	MODULAR FUME HOODS
A.	Basis of Design: UniMax Fume Hood Series by HEMCO Corporation.
B.	Design: Floor mounted, modular, walk-in fume hood. 
C.	Size: 
1.	Unit Width: 6 feet (1829 mm).
2.	Unit Width: 8 feet (2438 mm).
3.	Unit Width: 10 feet (3048 mm).
4.	Unit Width: 12 feet (3658 mm).
5.	Unit Width: 16 feet (4877 mm).
6.	Unit Width: 20 feet (6096 mm).
7.	Unit Width: 24 feet (7315 mm).
8.	Unit Depth: 48 inches (1219 mm) outside, 42 inches (1067 mm) inside.
9.	Unit Depth: 72 inches (1829 mm) outside, 66 inches (1676 mm) inside.
10.	Unit Depth: 96 inches (2438 mm) outside, 90 inches (2286 mm) inside.
11.	Unit Height: 8 feet (2438 mm).
12.	Unit Height: 10 feet (3048 mm).
13.	Unit Height: 12 feet (3658 mm).
D.	Components:
1.	Wall Panels: 2 inches (51 mm) thick.
a.	Surface Panel: Chemical and fire resistant composite resin.
b.	Surface Panel: Stainless steel.
2.	Lighting: Vapor proof fluorescent.
3.	Lighting: Vapor proof LED.
4.	Lighting: Explosion proof, Class I, Div I.
5.	Lighting: Explosion proof, Class I, Div II.
6.	Electrical Service: 115V.
7.	Electrical Service: 220V.
8.	Door Type: FG, Framed glass door with overhead suspension.
9.	Door Type: FS, Framed glass door with floor sliding track.
10.	Door Type: SC, Strip curtains.
11.	Floor Surface: ER-WS, Epoxy resin.
12.	Floor Surface: PR-WS, Phenolic resin.
13.	Floor Surface: SS-304, Stainless steel.
14.	Floor Surface: HazMax containment basin.
15.	Distillation Apparatus Grids: Aluminum rod assembly.
16.	Distillation Apparatus Grids: Stainless steel assembly.
17.	Distillation Apparatus Grids: Aluminum rod assembly.
18.	Exhaust Blowers: Sized to meet required application.
19.	Fume Scrubbers and Filtration: Provide excellent air pollution control for water soluble fumes and odors.
20.	HEPA Filter Bag-In/Bag-Out Filter: Contained within a type 304 stainless steel housing with bag-in/bag-out attachment and pre-filter. HEPA is 99.99 percent efficient and the pre-filter is 30 percent efficient. Filter is rated at 1000 CFM. One filter required for 48 inches (1219 mm) and 60 inches (1524 mm) hoods; 2 filters required for 72 inches (1829 mm) hoods.
E.	Assembly: Field assembled.
F.	Assembly: Factory assembled.
2.14	VENTED ENCLOSURES
A.	Basis of Design: EnviroMax Vented Enclosures by HEMCO Corporation.
1.	Size: 
a.	Unit Width: 48 inches (1219 mm).
b.	Unit Width: 60 inches (1624 mm).
c.	Unit Width: 72 inches (1829 mm).
d.	Unit Width: 96 inches (2438 mm). 
e.	Unit Width: 120 inches (3048 mm).
f.	Unit Width: 144 inches (3658 mm).
g.	Unit Width: _____.
h.	Unit Depth: 30 inches (762 mm).
i.	Unit Depth: 36 inches (914 mm).
j.	Unit Depth: 48 inches (1219 mm).
k.	Unit Depth: 60 inches (1624 mm).
l.	Unit Depth: _____.
m.	Unit Height: 48 inches (1219 mm).
n.	Unit Height: 60 inches (1624 mm).
o.	Unit Height: _____.
2.	Components:
a.	Superstructure: Welded steel framework with chemical resistant white powder coated finish.
b.	Side and Rear Walls: Clear acrylic.
c.	Side and Rear Walls: Tempered glass.
d.	Front Sash: Horizontal sliding shatter-proof clear viewing panels, 4 panels on 2 tracks to allow access at any position.
e.	Front Sash: Hinged sash, vertical rising.
f.	Front Sash: Hinged sash, horizontal opening.
g.	Front Sash: Counter balanced vertical sash.
h.	Access: As indicated on Drawings.
i.	Access: Front only.
j.	Access: _____.
k.	Ceiling: Clear tempered safety glass, slotted ceiling baffle.
l.	Lighting: Vapor proof fluorescent.
m.	Lighting: Vapor proof LED.
n.	Lighting: Explosion proof, Class I, Div I.
o.	Lighting: Explosion proof, Class I, Div II.
p.	HEPA Filters: Ceiling mounted in enclosure and designed to maintain a minimum of class 100 environment. Module with integral fan, prefilter, and speed control.
3.	Bench:
a.	Worksurface: Epoxy resin, 1 inch (25 mm) thick.
b.	Worksurface: Phenolic resin, 1 inch (25 mm) thick.
c.	Worksurface: Plastic laminate, 1-1/2 inch (38 mm) thick.
d.	Worksurface: Stainless steel.
e.	Worksurface: Optical breadboard.
f.	Width: 48 inches (1219 mm).
g.	Width: 60 inches (1624 mm).
h.	Width: 72 inches (1829 mm).
i.	Width: 96 inches (2438 mm). 
j.	Width: _____.
k.	Depth: 30 inches (762 mm).
l.	Depth: 36 inches (914 mm).
m.	Depth: _____.
n.	Height: Adjustable, 28 to 34 inches (711 to 864 mm).
o.	Legs: Telescoping 2 inch (51 mm) square steel, color: Lab White.
p.	Shelf: Lower shelf.
q.	Casters: Standard swivel locking casters.
r.	Casters: Roll and set casters.
B.	Basis of Design: Containment Control Systems by HEMCO Corporation.
1.	Designed to eliminate potentially hazardous vapors or particulate in a non-recirculation exhaust system.
2.	Size: 6 x 4 feet (1829 x 1219 mm).
3.	Size: 6 x 6 feet (1829 x 1829 mm).
4.	Size: 8 x 4 feet (2438 x 1219 mm).
5.	Size: 8 x 6 feet (2438 x 1829 mm).
6.	Size: _____.
7.	Components:
a.	Superstructure: Welded steel framework with chemical resistant white powder coated finish.
b.	Side and Rear Walls: Solid wall panel, 2 inch (51 mm) thick with foam core and faced on both sides with chemical and fire resistant composite resin.
c.	Side and Rear Walls: Clear acrylic.
d.	Side and Rear Walls: Tempered glass.
e.	HEPA Filters: HEPA filtered air supply and exhaust air.
f.	Curtain: Clear vinyl strip curtain, with air gap at bottom.
g.	Extraction Fans: Automatically controlled to ensure near constant air flow.
h.	Lighting: Vapor proof fluorescent.
i.	Lighting: Vapor proof LED.
j.	Lighting: Explosion proof, Class I, Div I.
k.	Lighting: Explosion proof, Class I, Div II.
C.	Assembly: Unitized, pre-assembled.
D.	Assembly: Modular, site assembled.
E.	Gauge: Minihelic gauge.
F.	Gauge: Magnehelic gauge.
G.	Gauge: Mini photohelic gauge.
H.	Gauge: Digihelic gauge.
2.15	ACCESSORIES
A.	Service Fittings and Fixtures: Manufactured by the Water Saver Fixture Company or approved equal.
1.	Indicate proper service using color coding, as follows:
a.	Carbon Dioxide (CO2): Pink.
b.	Gas (GAS): Blue.
c.	Distilled Water (DS): White.
d.	Air (AIR): Orange.
e.	Hydrogen (HYD): Pink.
f.	Vacuum (VAC): Yellow.
g.	Nitrogen (NIT): Brown.
h.	Steam (STM): Black.
i.	Oxygen (OXY): Light Green.
j.	Cold Water (CW): Green.
k.	Hot Water (HW): Red.
l.	Deionized Water (DI): White.
m.	_______.
2.	Finish of Service Fittings Inside the Hood: Epoxy finish, color coded to service index color.
3.	Handle Finish: White nylon handle and guide flange with a full-view screw-on colored index button.
4.	Handle Finish: Forged brass handle with a full-view screw-on colored index button.
B.	Electrical Services:
1.	All electrical receptacles, duplexes, and switches prewired to a single junction box for electrical connection.
a.	Receptacles: 3-wire, 15 amp duplex, 115 VAC.
b.	Receptacles: 3-wire, 20 amp duplex, 115 VAC.
c.	Receptacles: 3-wire, 15 amp duplex, 230 VAC.
d.	Receptacles: 3-wire, 20 amp duplex, 230 VAC.
e.	Receptacles: _____.
f.	Light Switch: 3-wire, polarized grounded, 15 amp, 125 VAC.
g.	Light Switch: _____.
h.	Plates: Nylon.
i.	UL and CSA listed.
C.	Plumbing Services:
1.	Conforms to ANSI Z21.15.
2.	Epoxy Resin Sink: Laboratory sink made of chemical and corrosion resistant epoxy resin. Drop-in sink. Includes sink stopper and drain outlet.
a.	Location: _____.
3.	Polypropylene Sink: Laboratory sink made of chemical resistant heavy duty polypropylene. Drop-in sink. Includes drain outlet.
a.	Location: _____.
4.	Polypropylene Sink: Laboratory sink made of one-piece, type 304 stainless steel and polished to a No. 4 satin finish. Drop-in sink. Sound deadened to reduce drumming. Includes drain outlet.
a.	Location: _____.
5.	Cup Sink, 6 inch diameter: Polyolefin cup sink with 1-1/2 inch IPS tailpiece and outlet strainer.
6.	Oval Cup Sink, 3 x 6 inches: Polyolefin drop-in cup sink with 1-1/2 inch IPS tailpiece and outlet strainer.
7.	Oval Cup Sink, 3 x 9 inches: Polyolefin drop-in cup sink with 1-1/2 inch IPS tailpiece and outlet strainer.
8.	Oval Wall Cup Sink, 3 x 6 inches: Polyolefin cup sink with 1-1/2 inch IPS tailpiece and outlet strainer.
9.	Jar P Trap: Includes adjustable 1-1/2 inch IPS tailpiece and removable jar.
10.	P Trap: Polypropylene with 1-1/2 inch IPS tailpiece.
D.	Instruction Plate: Corrosion resistant or plastic plate attached to the fume hood exterior with condensed information covering recommended locations for apparatus and accessories, use of sash, and recommended safe operation procedures.
PART 3    EXECUTION
3.1	EXAMINATION
A.	Do not begin installation until substrates have been properly prepared.
B.	If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.
3.2	INSTALLATION
A.	Clean surfaces thoroughly prior to installation.
B.	Install in accordance with manufacturer's instructions, approved submittals and in proper relationship with adjacent construction. Secure work surfaces to casework securely. Test for proper operation and adjust until proper operation is achieved.
3.3	PROTECTION
A.	Protect installed products until completion of project.
B.	Touch-up, repair or replace damaged products before Substantial Completion.

END OF SECTION