SPECIFIER: Select mounting style in first subparagraph below.

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1 SECTION SUMMARY A. Section Includes: SPECIFIER: Select mounting style in first subparagraph below. 1. Prefabricated, [casework-mounted] [bench-mounted], chemical fume hood unit. 2. Related accessories. a. Junction boxes, switches, receptacles, and other controls. b. Fixtures, shipped loose for field installation. 3. Demonstration and training in the use and maintenance of the fume hoods RELATED REQUIREMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. SPECIFIER: Select applicable Section in paragraph below for correct location of related casework. B. Section [ Architectural Wood Casework] [ Manufactured Metal Casework] [ Manufactured Wood Casework] [ Manufactured Plastic Casework] SPECIFIER: Indicate specific Sections in the 3 Divisions of Work below, or keep as is. C. Division 22 - Plumbing: Furnishing and installation of plumbing utilities and final connections. D. Division 23 - Heating, Ventilating, and Air Conditioning (HVAC): Furnishing and installation of exhaust duct work and equipment and final connections to fume hoods. E. Division 26 - Electrical: Furnishing and installation of electrical utilities and final connections REFERENCES SPECIFIER: Use care when indicating the edition date of the referenced standards; these standards are subject to regular review, and updated accordingly. 06/01/

2 A. American National Standards Institute/American Industrial Hygiene Association (ANSI/AIHA) 1. ANSI/AIHA Z , Laboratory Ventilation B. American National Standards Institute/American Society of Heating, Refrigerating, and Air Conditioning Engineers (ANSI/ASHRAE) 1. ANSI/ASHRAE Standard , Method of Testing Performance of Laboratory Fume Hoods C. American National Standards Institute/International Organization for Standardization/American Society for Quality Control (ANSI/ISO/ASQC) 1. ANSI/ISO/ASQC Q , Quality Management Systems Requirements Standard D. ASTM International (ASTM) 1. ASTM C , Standard Specification for Heat-Treated Flat Glass--Kind HS, Kind FT Coated and Uncoated Glass. 2. ASTM C e1, Standard Specification for Laminated Architectural Flat Glass 3. ASTM D570-98(2010)e1, Standard Test Method for Water Absorption of Plastics 4. ASTM D638-10, Standard Test Method for Tensile properties of Plastics 5. ASTM D695-10, Standard Test Method for Compressive Properties of Rigid Plastics 6. ASTM D790-10, Standard Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials 7. ASTM D a, Standard Specification for Polypropylene Injection and Extrusion Materials 8. ASTM E84-10b, Standard Test Method for Surface Burning Characteristics of Building Materials 9. ASTM E162-09, Standard Test Method for Surface Flammability of Materials Using a Radiant Heat Energy Source E. The Scientific Equipment and Furniture Association (SEFA) 1. SEFA , Recommended Practices for Laboratory Fume Hoods F. Underwriters Laboratories, Inc. (UL) G. US Consumer Product Safety Commission (CPSC) CFR Part 1201 ( Edition) Safety Standards for Architectural Glazing Materials 1.04 ACTION AND INFORMATIONAL SUBMITTALS SPECIFIER: Revise Section number in the paragraph below to match that used in the Project Manual. A. Submit in accordance with Section [ ] [Other]: 1. Product Data: For each product indicated, submit technical data. Include the following: a. Manufacturer's model number /01/2011

3 b. Detailed specifications of construction. c. Accessories and components that will be included for Project. 2. Shop Drawings: Include plans, elevations, and sections with dimensions, description of materials and finishes, general construction roughing-in dimensions, component connections, anchorage methods, hardware, utility service requirements, and attachments to other work. a. Include layout of units with relation to surrounding walls, doors, windows, lighting and air-conditioning fixtures, connections of hood to hood exhaust system, location of access doors, and junction boxes. b. Indicate clearance requirements for access and maintenance. c. Indicate utility service connections for water, drainage, and power; include roughing-in dimensions. d. Coordinate shop drawings with other trades whose work affects installation or performance of fume hoods. 3. Samples: a. Not less than 4" square piece of polypropylene stock used in the general construction of the fume hood, in thickness and finish specified, if requested by the Architect. b. Not less than 4" square piece of work surface material, in thickness, color, and finish specified. 4. Test and Evaluation Reports: Submit results of testing required under Articles 2.09 SOURCE QUALITY CONTROL, and 3.03 FIELD QUALITY CONTROL. 5. Qualification Statements: Written statement from fume hood manufacturer, that installer meets the requirements specified in Article 1.06 QUALITY ASSURANCE CLOSEOUT SUBMITTALS SPECIFIER: Revise Section number in the paragraph below to match that used in the Project Manual. A. Submit in accordance with Section [ ] [Other]: 1. Operation and Maintenance Data: Include detailed instructions for use and maintenance of fume hoods. 2. Warranty: Submit 2 copies for inclusion in the Owner's systems and equipment maintenance manual QUALITY ASSURANCE A. Compliance: 1. Comply with the provisions of the Building Code, these specifications, and standards referenced in Article 1.03 REFERENCES, except where more stringent requirements are shown on the Drawings or specified herein. 2. Fume hoods and their installation shall comply with laws, ordinances, rules, regulations and orders of governing authorities having jurisdiction over this portion of the Work. 06/01/

4 B. Manufacturer: A firm with undivided responsibility for the fabrication of fume hoods, performed at a single location, and with minimal exposure to outside contaminants. C. Installer: The manufacturer or an installer authorized by the manufacturer to install laboratory equipment, with at least 10 years of successful experience in installing fume hoods similar to those specified DELIVERY, STORAGE, AND HANDLING A. Deliver, store, and handle fume hoods using means and methods that will prevent damage, deterioration, and loss, including theft and vandalism. Comply with manufacturer's written instructions. 1. Deliver fume hoods to Project site in an undamaged condition in manufacturer's original sealed containers or other packaging system, complete with labels and instructions for handling, storing, unpacking, protecting, and installing. 2. Inspect fume hoods on delivery to determine compliance with the Contract Documents and to determine that products are undamaged and properly protected. SPECIFIER: Select Contractor or Construction Manager in subparagraph below as applicable. 3. The [Contractor] [Construction Manager] will provide a secure location and enclosure at Project site for storage of fume hoods until time of installation FIELD CONDITIONS A. Environmental Requirements: 1. Do not install fume hoods until building is enclosed, and surrounding construction is completed and will not affect the final positioning of the product, including overhead work associated with the fume hoods, floor, wall and ceiling finishes, mechanical, electrical, plumbing, and fire protection work performed by others WARRANTY SPECIFIER: When warranties are required, verify with Owner's counsel that warranties stated in this Article are not less than remedies available to Owner under prevailing local laws. A. Warranty: Manufacturer's standard form in which manufacturer agrees to repair or replace fume hoods that fail in materials or workmanship within specified warranty period. 1. Failures include, but are not limited to: a. Manufacturer defects; b. structural failure; /01/2011

5 c. warping, and; d. finish. 2. Failures do not include: a. Damages caused by misuse, abuse, or modifications made by the Owner. 3. Warranty Period: One [Other] year [s] from the [date of Substantial Completion] [date of customer acceptance of completed unit]. PART 2 - PRODUCTS 2.01 MANUFACTURER A. Acceptable Manufacturers: LabAire Systems, a Division of Activar Plastics Products Group 9650 Newton Avenue South Bloomington, Minnesota B. Substitutions: Manufacturers seeking approval of their products are required to comply with the Owner's Instructions to Bidders MANUFACTURED UNITS A. Fume Hood: Model LAS-1000 "DynamicFLO Fume Hood", VAV or constant volume chemical fume hood. SPECIFIER: Select sizes listed below based on Project conditions and Owner's recommendations. B. Sizes: 1. Width: [4] [5] [6] [7] [8] [other] feet. 2. Depth: [30] [36] [other] inches. 3. Height: [55-1/2] [other] inches PERFORMANCE CRITERIA A. General Performance Requirements: Properly installed and operating fume hoods serve as ventilated workspaces, with the purpose of capturing, containing, and evacuating fumes, vapors and airborne particulates associated with the activity within the enclosure. B. Illumination Within the Work Area: 1. Definition of Work Area: The area from the work surface to the maximum opening height of the front sash (typically 30 inches); the width from inner side wall to inner side wall, and; the depth from the inner face 06/01/

6 of the front sash to the front face of the baffles. 2. The average illumination level within the work area shall be 90 to 120 foot candles. 3. Average illumination is determined by measuring light in 6 inch intervals within the work area. C. Air Flow: Proper design shall allow for safe and consistent air flow inside the hood and around the hood face. 1. The fume hood is designed to work within a Variable Air Volume System. a. The system shall maintain a safe face velocity based on the recommendations of the manufacturer. 2. Variations in air flow shall not exceed manufacturer's in-house test results when tested in accordance with ANSI/ASHRAE 110. D. Static Air Pressure Loss: 1. The design of the fume hood shall allow for minimal static pressure loss. 2. The maximum average static pressure loss reading shall be taken 3 diameters above the hood outlet from 4 points, 90 degrees apart, and shall not exceed the following guidelines in full open position: Face Velocity (FPM) Measured Static Pressure Loss (WG) 60 FPM 0.15 inches 80 FPM 0.22 inches 100 FPM 0.30 inches 2.04 MATERIALS A. Materials: 1. Hood: Polypropylene "Protec TM PP" (Vycom Corporation). a. Physical Characteristics: Refer to manufacturer's chart at end of this Specification. SPECIFIER: Specify desired work surface material and its physical characteristics, including product name, manufacturer, style, size, color, finish, etc.; polypropylene is the standard; examples of other acceptable work surfaces are indicated below. 2. Work Surfaces: a. [Polypropylene as specified above] [High pressure laminate] [Phenolic resin] [Slate] [Stainless steel] [Trespa ]: 3. Sash Glazing: a. Laminated Safety Glass: Clear laminated glass complying with ASTM C1172 and with testing requirements in 16 CFR 1201 for Category II materials. 1) Construction: Two plies of 1/8-inch thick tempered float glass, each complying with ASTM /01/2011

7 C1048; Type I; Quality-Q3; Class I, and; separated by a clear inch polyvinyl butyral interlayer. 2) Overall Glass Thickness: 1/4-inch (nominal). 3) Provide safety glazing labeling. 4. Sash Counterweight Connection: Kevlar-reinforced polyurethane belt. 5. Adhesives/Sealants: 100 percent silicone. 6. Fasteners: Manufacturer's standard recommended fasteners. a. Polypropylene screws. b. Steel shoulder bolts (used outside work zone, pulleys). 7. Lighting: SPECIFIER: Select preferred lighting in subparagraph below. a. [Two-tube LED light] [Two-tube fluorescent light] 2.05 CONTROLS A. Standard Operation Controls: 1. Sash Control: Manual raising and lowering. 2. Lighting: Electrical switch with on-off positions. 3. Rear Baffles: Stationary. SPECIFIER: Review optional control choices below with the Owner and manufacturer, then select desired controls. B. Optional Operation Controls: 1. Optional Sash Control: Encoded motor-driven sash, with adjustable settings, including speed, location, and presets. a. Programmable Logic Controller (PLC) with Human Machine Interface (HMI) and touch screen control. 2. Optional Lighting Control: a. Programmable Logic Controller (PLC) with Human Machine Interface (HMI). 3. Optional Adjustable Rear Baffle Control: Motor-driven valves. a. Programmable Logic Controller (PLC) with Human Machine Interface (HMI). 4. Optional Air Flow Monitor and Control: 06/01/

8 SPECIFIER: Select one or all of the features in subparagraph below. a. Face velocity monitor control b. Auto motion sensor control c. Sash positioning sensor 2.06 FIXTURES SPECIFIER: Review optional fixtures below with the Owner and manufacturer; fume hoods do not come equipped with these unless specified. 9. Fixtures: a. Sinks: 1) Cup sinks 2) Fabricated sinks 3) Custom sized sinks b. Faucets: 1) Premanufactured faucets 2) Fabricated or custom faucets c. Gas: 1) Air 2) Gas 3) Vacuum 4) Other d. Handles 1) Premanufactured handles 2) Fabricated handles 2.07 ACCESSORIES SPECIFIER: Additional accessories are available from the manufacturer; review available optional accessories with manufacturer and Owner prior to specifiying. A. Accessories: Available upon request FABRICATION /01/2011

9 A. General: The main assembly is constructed of 1/2-inch thick, white polypropylene. Seams are fully-welded forming the rigid internal structure, with removable, white polypropylene panels to enclose utilities and inner components. Panels are sized differently to accommodate ease of use and function. Standard overall dimensional tolerances are plus-or-minus1/8-inch. B. Joints: Joints are formed with 5/32-inch white polypropylene welding rod. 1. Joints are water tight. 2. Exterior welds are shaved flush with construction material to create a uniform surface. C. Structure: The unit is constructed with the inner walls as the main support structure. Walls contain access ports to the utility areas, which are secured with 1/4-20 white polypropylene Philips head screws. Ports are flush with the surrounding walls with lipped construction to reduce the potential of leakage. External walls are removable and secured with 1/4-20 white polypropylene Philips head screws. 1. The lining is 1/8-inch virgin sheet stock material and overlays the polypropylene surface such that the interior dimensions are identical. The liner is heat-welded together to form a ridged structure, and fastened to the polypropylene by 1/4-20 flathead screws of like material. D. Airfoil: The airfoil is constructed from 3/8-inch white polypropylene with additional bracing and mounting brackets spaced along the length of it. The airfoil rests on the lip of the spill retention trough. The airfoil is removable for easy cleanup. SPECIFIER: Select preferred work surface profile in paragraph below. E. Work Surface: The work surface is [flat] [dished to accommodate additional spill retention]. The surface has a ribbed structure on the underside to add structural rigidity. SPECIFIER: Add subparagraph below when a nonstandard work surface material is selected; coordinate with Article 2.03 MATERIALS. 1. Provide polypropylene liner to enclose and maintain sealed work environment. SPECIFIER: Identify glazing material in paragraph below based on selection made in Article 2.03 MATERIALS. F. Viewing Panel and Sash: The front viewing panel is glazed with [safety glass] [other]. The frame supporting the glass is made of white polypropylene. The front sash is suspended with a counterweight that is encapsulated with white polypropylene and contains a ballast area. The sash will be attached with a Kevlar-reinforced polyurethane belt. The pulleys are made from polypropylene or aluminum (with locating system). The handle is constructed of white polypropylene and fastened with a clear double-sided tape. G. Baffles: The baffles are rectangular-shaped. Four layers of evenly spaced slots pulls the workspace air into the rear exhaust plenum. H. Electrical features are contained in UL-listed PVC junction boxes connected by PVC pipe. Junction boxes are 06/01/

10 sealed using gaskets. SPECIFIER: Closure panels are optional; select the paragraph below and desired area of enclosure if these are required. I. Closure Panels: 1. Provide additional panels to enclose [the upper sections of the hood to the ceiling above] [and] [the plumbing chase] SOURCE QUALITY CONTROL A. Tests: Fume hoods are tested at the manufacturer's assembly facility in compliance with ANSI/ASHRAE 110 (Manufacturer's Test), by independent third party testing prior to shipping; results are available to the Owner, if requested. 1. These tests generally include: a. Tracer Gas Test b. Face Velocity Test c. Smoke Pattern Test d. Saturation Smoke Test PART 3 - EXECUTION 3.01 EXAMINATION SPECIFIER: Select Contractor or Construction Manager in paragraph below as applicable. A. Examine substrates, areas, and conditions, with installer present where indicated, for compliance with requirements for installation tolerances and other conditions affecting performance. Notify the [Contractor] [Construction Manager] of conditions detrimental to performance of the Work and recommended corrections. Where the installation and its completion will be delayed due to existing conditions, follow notification immediately with a written report. Proceed with installation only after unsatisfactory conditions have been corrected INSTALLATION A. General: Install fume hoods in strict accordance with the manufacturer's instructions, plumb, level, aligned, rigid, and securely anchored to supporting casework, in proper location, and in accordance with final shop drawings. B. Coordinate sequence of work with mechanical, plumbing, and electrical trades and with installation of related casework /01/2011

11 SPECIFIER: "Acceptance Testing" specified in Article 3.03 FIELD QUALITY CONTROL below, is recommended but not required; determine costs associated with testing prior to specifying FIELD QUALITY CONTROL A. Acceptance Testing: On completion of fume hood installation and before permitting regular use, perform acceptance tests in accordance with ANSI/ASHRAE 110, for face velocity and airflow smoke patterns. 1. Advise Owner and Architect in advance of dates and times that tests are to be performed on fume hoods. 2. Fume hoods are determined to have passed testing if test results meet performance criteria specified. 3. Fume hoods which fail to comply with scheduled tests shall be adjusted in the field by the appropriate mechanical trades, and retested until compliance with specified limits of operation are obtained CLEANING AND PROTECTION A. Clean fume hoods following installation in accordance with manufacturer's instructions and recommendations using liquids that will not harm finishes and glazing. 1. Clean exposed surfaces of the fume hood including surfaces exposed to view, those within the work area, and glazing. SPECIFIER: Select Contractor or Construction Manager in paragraph below as applicable. B. Advise [Contractor] [Construction Manager] of methods to protect fume hoods until acceptance by the Owner. Protect fume hoods from damage due to other construction activity, during installation and after acceptance CLOSEOUT ACTIVITIES A. Demonstration and Training: Engage a factory-authorized service representative to train Owner's personnel to adjust, operate, and maintain fume hoods. 1. Perform training only after equipment has been installed, tested, and is operating correctly. END OF SECTION /01/