1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL 1805ISBN 0-7629-0775-4Laboratory Hoods andCabinetsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZE
2、D FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUnderwriters Laboratories Inc. (UL)333 Pfingsten RoadNorthbrook, IL 60062-2096UL Standard for Safety for Laboratory Hoods and Cabinets, UL 1805First Edition, Dated June 7, 2002Revisions: This Standard contains revisions through and
3、including June 2, 2006.Summary of TopicsRevisions are being issued to replace the term light fixture with the term luminaire.UL Standards for Safety are developed and maintained in the Standard Generalized Markup Language(SGML). SGML - an international standard (ISO 8879-1986) - is a descriptive mar
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25、uld be signified in writing.Copyright 2006 Underwriters Laboratories Inc.JUNE 2, 2006 UL 1805tr2UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULThis Standard consists of pages dated as shown in the following checklist:Page Date1-3 June 2, 2006
26、4-5 June 7, 20026June 2, 20067-11 .June 7, 200212-12B.June 2, 200613-20 June 7, 2002JUNE 2, 2006 UL 1805 tr3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJUNE 2, 2006 UL 1805tr4No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR F
27、URTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJUNE 7, 2002(Title Page Reprinted: June 2, 2006)1UL 1805Standard for Laboratory Hoods and CabinetsFirst EditionJune 7, 2002An effective date included as a note immediately following certain requirementsis one established by Underwriters La
28、boratories Inc.Revisions of this Standard will be made by issuing revised or additional pagesbearing their date of issue. A UL Standard is current only if it incorporates themost recently adopted revisions, all of which are itemized on the transmittal noticethat accompanies the latest set of revised
29、 requirements.ISBN 0-7629-0775-4COPYRIGHT 2002, 2006 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJUNE 2, 2006LABORATORY HOODS AND CABINETS - UL 18052No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED F
30、OR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .72 Glossary .73 General 93.1 Units of measurement .93.2 Components .93.3 References 94 Installation and Operating Instructions 10CONSTRUCTION5 General .105.1 Flammability 105.2 Corrosion protection .115.3 C
31、hemical resistance .116 Sash .117 Bypass .118 Work Surface 119 Baffles 1210 Hood Exhaust 1211 Hood Blower .1212 Electrical Devices .1213 Utilities 1213.1 Service fixture controls and outlets .12PERFORMANCE14 Small Flame Impingement Test .1314.1 General .1314.2 Apparatus .1314.3 Test method .1415 Che
32、mical Resistance Test .1415.1 General .1415.2 Test specimens 1415.3 Specimen conditioning 1515.4 Specimen testing .1516 Resistance to Impact 1516.1 Sash glazing material .1516.2 Sash frame and track .1616.3 Bypass grille and interior walls .1616.4 Work surface 1617 Air Flow Tests 1717.1 Test samples
33、 1717.2 Test conditions .1717.3 Apparatus .1717.4 Face velocity profile 1817.5 Downflow velocity profile 18JUNE 2, 2006 LABORATORY HOODS AND CABINETS - UL 1805 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL17.6 Baffle restriction 1917.7 Air
34、 flow direction .19MARKING18 General 19JUNE 7, 2002LABORATORY HOODS AND CABINETS - UL 18054UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJUNE 7, 2002 LABORATORY HOODS AND CABINETS - UL 1805 5No Text on This PageUL COPYRIGHTED MATERIAL NOT AU
35、THORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULThis page intentionally left blank.JUNE 2, 2006LABORATORY HOODS AND CABINETS - UL 18056UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 These requ
36、irements apply to laboratory hoods and cabinets intended to provide an enclosedcountertop work area with exhaust for containment and removal of vapors, mists, gases, and particulatematter from the work area.1.2 These requirements do not cover ductless hoods (i.e., hoods that recirculate air back to
37、roomenvironment after filtering) or gloveboxes.1.3 These products are investigated for fire, electrical and mechanical risk of injuries only. A limitednumber of tests are conducted for minimal air flow capability. It remains for the user to determine that thehood performance, as confirmed by the req
38、uirements in this standard, meets the needs of the user. Theseneeds depend on several factors, including installation with proper exhaust equipment, location within theroom, the type of material being handled and the method in which the material is being handled. Also,suitability for use with perchl
39、oric acid or radiological materials is not investigated.1.4 Requirements for the installation of laboratory hoods are included in the Standard for Fire Protectionfor Laboratories Using Chemicals, NFPA 45 and in the Method of Testing Performance of LaboratoryFume Hoods, ASHRAE 110.1.5 Requirements fo
40、r the installation of piped gas systems are contained in the following standards:a) National Fuel Gas Code, NFPA 54,b) Liquefied Petroleum Gas Code, NFPA 58,c) Gaseous Hydrogen Systems at Consumer Sites, NFPA 50A,d) Design and Installation of Oxygen-Fuel Gas Systems for Welding, Cutting, and AlliedP
41、rocesses, NFPA 51.2 Glossary2.1 For the purpose of this Standard, the following definitions apply:2.2 AUXILIARY AIR Supplemental air delivered to a laboratory hood to reduce room air consumption.2.3 AUXILIARY AIR HOOD A laboratory hood with an external air plenum at the top of the laboratoryhood. Th
42、e auxiliary air plenum provides a makeup air stream compromised of unconditioned or onlyminimally conditioned outside air to substantially reduce the amount of conditioned room air exhaustedby the lab hood.2.4 BAFFLE A panel or panels located at the rear of the hood interior which aid in distributin
43、g theflow pattern of air moving into and through the hood.2.5 BIOLOGICAL SAFETY CABINET An enclosed countertop work area for handling andcontainment of biological materials. A cabinet also intended to serve as a laboratory hood shall meetthe requirements for laboratory hoods.2.6 BYPASS An airflow-co
44、mpensating opening that maintains a relatively constant volume exhaustthrough a laboratory hood regardless of sash position.JUNE 7, 2002 LABORATORY HOODS AND CABINETS - UL 1805 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL2.7 CAPTURE VELOC
45、ITY The air velocity, at a point in space of sufficient magnitude to overcomeroom air current and draw the air and any contaminants at that point into the hood.2.8 CFM Cubic foot per minute.2.9 COMBINATION SASH A sash that has a protective shield that moves vertically, containing two ormore transpar
46、ent panels, which slide horizontally.2.10 DUCTLESS HOOD A lab hood that is not connected to an exhaust system which discharges thelab hoods exhaust outdoors. Rather, a ductless lab hood incorporates an exhaust fan and air as anintegral part of the lab hood and discharges the exhaust directly into th
47、e room.2.11 EXHAUST AIR The air that is removed from an enclosed space and discharged to theatmosphere.2.12 FACE (OF HOOD) The hood opening or the plane of the inside surface of the sash.2.13 FACE VELOCITY The air velocity at the plane of and perpendicular to the opening of anexhaust hood.2.14 FPM F
48、eet per minute.2.15 GLOVEBOX A controlled environment work enclosure providing a primary barrier from the workarea. The operations are performed through sealed gloved openings, to protect the user, theenvironment and/or the product.2.16 HORIZONTAL SASH A moveable panel or panels set in the hood entr
49、ance used to form aprotective shield that is only able to be moved from side to side.2.17 HOOD INTERIOR Includes the walls, ceiling, baffles, sash, and work surface.2.18 LABORATORY HOOD An enclosed countertop work area with a sash or sashes that movevertically and/or horizontally to close the opening. Laboratory hoods need to be provided with anexhaust to remove vapors, mists, gases, and particulate matter from the work area. Adjustable or fixedinternal baffles may be p
