Safety Cabinets Dealers in Kolkata (1 products available)

The class I safety cabinet provides a wide performance envelope for the user from aerosol hazards and other particulate within the cabinets work area. All extract air is exhausted through HEPA (high efficient particulate air) filtration generally to atmosphere although recirculation models are also available through Safety Cabinet Solutions. Inflow air velocity should be between 0.7 and 1.0 m/sec and by their design nature are less susceptible to poor working techniques of the user or less than ideal room air conditions.     The class II microbiological safety cabinet (class II MSC), unlike the class I microbiological safety cabinet (MSC) provides protection to both the user & the material within the cabinet's working environment. Protection for the user is provided by means of an inflow air curtain whilst the sample material in the cabinet is protected from the dirty laboratory environment by a constant stream of HEPA filtered air (airflow velocities inflow > 0.4 m/s & down flow between 0.25 and 0.5 m/sec). All Class II cabinets are designed for work involving microorganisms assigned to biosafety levels 1,2 and 3. These cabinets provide a suitable environment for cell culture propagation and may also be used for the formulation of nonvolatile antineoplastic or chemotherapeutic drugs.The class III microbiological safety cabinet (often wrongly referred to as a glove box) is a highly specialized product designed for the most hazardous work typically carried out in a containment level 3 or 4 facility. Like the class II safety cabinet this class of cabinet provides protection for both the user and product albeit both to a much higher degree. Class III cabinet protection to the user is provided by means of barrier protection with the user working through gloves or gauntlets and protection to the material within the cabinet by means of the air being HEPA filtered as such, unlike the class II MSC open fronted cabinet the class II is almost immune to outside air influences. The inside of the cabinet operates at a negative pressure to the surrounding environment with the exhaust air being vented through a HEPA filter to atmosphere.