NSF International maintains NSF/ANSI Standard 49 Class II (laminar flow) biosafety cabinetry and also certifies that biosafety cabinets conform to the requirements of the standard. More than 20 tests are required during initial qualification testing; of these, the biological challenge tests are the most critical to ensuring that the model tested will provide personnel, product, and cross contamination protection.
REFERENCE:
Maren H. Roush and Stephen C. Williams.
NSF/ANSI Standard 49 Certification Testing of Biosafety Cabinets. JALA 2009;14:171–3
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