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NSF/ANSI 49-2012

Cabinetry: Design, Construction, Performance, and Field Certification

This edition of the Standard (NSF/ANSI 49-2012) includes the following revisions: Updates the language in the Standard to include a test method for biosafety cabinets with an interior sidewall dimension of three feet or less. Issue 46 - Direct Inflow Measurement (DIM) and Exhaust Clearance. Updates the Standard to include a reference to non-back-pressure compensated readings used in a Direct Inflow Measurement (DIM) in Annex A, Annex B, and Annex F. Also updates the language in Annex A, Annex E, and Annex F for the 12 in (30 cm) clearance requirement used for measuring an exhaust HEPA filter

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