NSF/ANSI 49 : 2019
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
BIOSAFETY CABINETRY: DESIGN, CONSTRUCTION PERFORMANCE, AND FIELD CERTIFICATION
Hardcopy , PDF
20-08-2021
01-03-2020
This Standard applies to Class II (laminar flow) biosafety cabinetry designed to minimize hazards inherent in work with agents assigned to Biosafety Levels 1, 2, 3, or 4.
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