Biological Safety Cabinet Class 2 Type B2

No downflow air is drawn from the cabinet exhaust air.

Biological safety cabinet class 2 type b2.

Class ii cabinets provide product operator and environment protection. These categories are class i class ii and class iii. Another class is planned to be added in 2017. Class ii type b2 biological safety cabinet.

All contaminated ducts and plenums are maintained at negative. Biological safety cabinet classes or biosafety cabinet classes are categories describing how the cabinet works and what it protects. A1 a2 b1 b2. They have hepa filtered.

Class ii type b2. This type of biological safety cabinet bathes the interior of the cabinet with clean filtered air and exhausts contaminated air from its interior outside of the laboratory further protecting both the user and the materials he or she is working with. This is an ideal cabinet for use in experiments where recirculation of chemical vapor back to the work zone is prohibited such as working with substantial amount of chemicals or with toxic chemical vapor so the cabinet is ducted to. As with type a2 cabinets type b1 cabinets can be used for work generating chemical vapors as long as the vapors do not interfere with the work when recirculated or when the work is done in the directly exhausted portion of the cabinet.

A class ii type b2 cabinet must maintain a minimum average inflow velocity of 100 fpm through the sash opening. Purifier logic class ii type b2 biosafety cabinets provide personnel product and environmental protection from hazardous particulates such as agents that require biosafety level 1 2 or 3 containment. Between class ii type a2 and type b2 biological safety cabinets north america and en12469. Type b1 and b2 cabinets are also typically used for biosafety levels 1 through 3.

All downflow and inflow air is exhausted through a hepa filter without recirculation within the cabinet. These energy efficient cabinets require direct connection to external exhaust and provide personal and product protection from biological hazards and contamination as well as protection from volatile toxic chemicals used in the cabinet. Class ii type b2 cabinets are total exhaust cabinets widely used in toxicology laboratories and similar applications where chemical effluent is present and clean air is essential see figure 1 class ii type b2 biological safety cabinets page 5. Nsf currently recognizes four types of class ii bscs.

Biological safety cabinets. They are suitable for general microbiological work with agents assigned to biosafety levels 1 2 and 3. The esco labculture class ii type b2 biosafety cabinet ensures operator sample and environmental protection against microbiological agents and chemical fumes. Nuaire class ii type b2 biological safety cabinets feature downflow air drawn from within the laboratory or outside air.

The thermo scientific 1500 series b2 bsc meets nsf ansi 49 for a class ii type b2 biosafety cabinet. There is no recirculationwithin the work area.