Class II biological safety cabinets fall into four types (A1, A2, B1, B2), all of which protect the specimen, the user, and the environment from contamination. This is especially crucial for applications that require aseptic or particulate free conditions such as tissue culture experiments, and in toxicology work involving fumes and gases. All types of Class II biological safety cabinet have HEPA (high-efficiency particulate air) filters at their air supply and exhaust points.
For Type A1 and A2 Class II biological safety cabinets (A2 has a higher air velocity for greater protection), 70% of the airflow is recirculated within the cabinet while 30% of the air is exhausted (usually through the top). These cabinets do not protect against vapors and gases and, therefore, are best used for applications requiring sterile conditions without the need to work with volatile chemicals. However, when a Type A2 Class II biological safety cabinet is connected to a building’s exhaust system (through an optional canopy), trace amounts of volatile chemicals and radionuclides may be used.
For Type B1 and B2 Class II biological safety cabinets, more air is exhausted out of the cabinet (70% for B1, 100% for B2). These cabinets are best used for applications that require larger quantities of volatile chemicals and/or radionuclides (although limit restrictions may still apply). Type B Class II biological safety cabinets must be connected to the building’s exhaust system to protect the user from vapors and gases.
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Company | NuAire | NuAire | NuAire | NuAire | NuAire |
Item | LabGard ES AIR Limited NU-545 Class II, Type A2 Biosafety Cabinet | LabGard ES (Energy Saver) CYTO Class II, Type A2 Biosafety Cabinet | LabGard® ES LP NU-640 Class II, Type A2 Animal Handling Biological Safety Cabinet | LabGard® ES NU-427 Class II, Type B1 Biosafety Cabinet | LabGard® ES NU-610 Dual Access Class II, Type A2 Animal Handling Biosafety Cabinet |
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Catalog Number | NU-545 | NU-581 | NU-640 Series | NU-427 | NU-610 |
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Class/Type | Class II, Type A2 | Class II, Type A2 | Class II, Type A2 | Class II, Type B1 | Class II, Type A2 |
Air Inflow Rate | 105 fpm (0.53 m/s) | 105 fpm (0.53 m/s) | 0.53 m/s | 105 fpm (0.53 m/s) | 105 fpm (0.53 m/s) |
Size(s) | 3, 4, 5, 6-foot (0.9, 1.2, 1.5, 1.8-meter) | 4, 5, 6-foot (1.2, 1.5, 1.8-meter) | Inquire | 4, 6-foot (1.2, 1.8-meter) | 6ft |
Exterior Dimensions | Varies with model | varies with model | (WxDxH) 56.4 to 80.4 x 33 x 78.3 to 86.3 in. (1433 to 2042 x 838 x 1987 to 2190 mm) | varies with model | (WxHxD) 2007x2108x829 mm (79x83x33 in) |
Interior Dimensions | Varies with model | varies with model | (WxDxH) 46.5 to 70.5 x 22.7 x 24.6 in. (1181 to 1791 x 578 x 626 mm) | varies with model | (WxHxD) 1626x635x718 mm (64x25x28.25 in) |
Recirculated/Exhausted Air | 70% / 30% | Inquire | 70% Recirculated / 30% Exhausted | 30% / 70% | 70% / 30% |
Description | The LabGard® ES (Energy Saver) AIR Limited Model NU-545 Biological Safety Cabinet (BSC) is a primary engineering control in obtaining the optimum product quality while reducing the potential for exposure of both product and personnel to airborne biological or particulate chemical agents in low to The LabGard® ES (Energy Saver) AIR Limited Model NU-545 Biological Safety Cabinet (BSC) is a primary engineering control in obtaining the optimum product quality while reducing the potential for exposure of both product and personnel to airborne biological or particulate chemical agents in low to moderate risk-hazard research and drug preparation or product operations, as prescribed by the Center for Disease Control (CDC) Atlanta, Georgia.... Read More | The LabGard ES (Energy Saver) CYTO Model NU-581 Laminar Flow Biosafety Cabinet (LFBSC) is a console model. The LabGard Model NU-581 utilizes an Energy Saver DC ECM Motor optimally determined forward curved fan for each model size/width to maximize both energy efficiency and filter loading capacity. The LabGard ES (Energy Saver) CYTO Model NU-581 Laminar Flow Biosafety Cabinet (LFBSC) is a console model. The LabGard Model NU-581 utilizes an Energy Saver DC ECM Motor optimally determined forward curved fan for each model size/width to maximize both energy efficiency and filter loading capacity. The Energy Saver ECM Motor is controlled to airflow setpoints via a solid-state DC motor controller with digital dual thermistor airflow sensors that provide an automatic compensation (constant volume control) for both filter loading and line voltage variances.
The Laminar Flow Biosafety Cabinet, (LFBSC) is a product resulting from the development of the ""laminar flow"" principle (see Airflow Schematic) and the application of environmental controls as required in the field of biological research or chemical (hazardous drugs)containment. The LFBSC, when used with proper technique, is an effective primary engineering control in obtaining the optimum product quality while reducing the potential for exposure of both product and personnel to airborne biological or particulate chemical (hazardous drugs) agents in low to moderate risk-hazard research and drug preparation or product operations, as prescribed by the Center for Disease Control (CDC) Atlanta, Georgia.
The NU-581 Console LFBSC meets the requirements of a Class II, Type A2 since the cabinet conforms to the following requirements:
- Maintains a minimum inflow velocity of 100 LFPM (.51mps) through the work access opening
- Has HEPA filtered downflow air that is mixed with the inflow air from a common exhaust plenum
- Discharges a percentage of air to the outside atmosphere after HEPA filtration
- Has all biologically contaminated ducts and plenums under negative pressure or surrounded by negative pressure
Cabinets used for work with minute quantities of non-flammable or explosive volatile toxic chemicals and tracer amounts of radionuclides required as an adjunct to microbiological studies must be exhausted through properly functioning exhaust canopies.... Read More | The LabGard® ES LP (Low Profile) NU-640 Class II, Type A2 Animal Handling Biosafety Cabinet provides the largest work access opening with the smallest footprint while offering enough versatility to assist with all facets in the vivarium industry. 105 fpm [0.53 m/s] in-flow combined with 60 fpm [ The LabGard® ES LP (Low Profile) NU-640 Class II, Type A2 Animal Handling Biosafety Cabinet provides the largest work access opening with the smallest footprint while offering enough versatility to assist with all facets in the vivarium industry. 105 fpm [0.53 m/s] in-flow combined with 60 fpm [0.30 m/s] true laminar down-flow creates the dynamic air barrier. The nominal 6 foot [1.8 m] wide cabinet allows the ability to mix and match an assortment of configurations. Combine Refuse Disposal with Dirty Cage Collection to create your perfect animal waste station. The NU-640 also fits through standard doorways. ... Read More | The LabGard ES (Energy Saving) NU-427 Class II, Type B1 Laminar Flow Biological Safety Cabinet (BSC) is a bench/table top model, utilizing an Energy Saver DC ECM motor optimally determined forward curved fan for each model size/width to maximize both energy efficiency and filter loading capacity. The LabGard ES (Energy Saving) NU-427 Class II, Type B1 Laminar Flow Biological Safety Cabinet (BSC) is a bench/table top model, utilizing an Energy Saver DC ECM motor optimally determined forward curved fan for each model size/width to maximize both energy efficiency and filter loading capacity. The Energy Saver ECM motor is controlled via a solid-state DC motor controller that provides automatic compensation (constant volume control) for both filter loading and line voltage variances. The NU-427 BSC is a product resulting from the development of the "laminar flow" principle and the application of environmental controls as required in the field of biological research or chemical containment. The NU-427 BSC when used with proper technique, is an effective laboratory aid in obtaining the optimum control over product quality while reducing the potential for exposure of both product and personnel to airborne biological or particulate chemical agents in low to moderate risk-hazard research and use of the BSC to work with chemicals and trace amounts of radio nuclides required as an adjunct to microbiological studies, as prescribed by the Center for Disease Control (CDC) Atlanta, Georgia.... Read More | The LabGard NU-610 Dual Access Laminar Flow, Class II, Type A2 Biological Safety Cabinet (LFBSC) is a console model, a product resulting from the development of the "laminar flow" principle and the application of environmental controls as required in the field of biological research or chemical The LabGard NU-610 Dual Access Laminar Flow, Class II, Type A2 Biological Safety Cabinet (LFBSC) is a console model, a product resulting from the development of the "laminar flow" principle and the application of environmental controls as required in the field of biological research or chemical containment. The LFBSC, when used with proper technique, is an effective laboratory aid in obtaining the optimum control over product quality while reducing the potential for exposure of both product and personnel to airborne biological or particulate chemical agents in low to moderate risk-hazard research and drug preparation or product operations, as prescribed by the Center for Disease Control (CDC) Atlanta, Georgia.... Read More |
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