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 NU-427 Class II, Type B1 Biosafety Cabinet | LabGard ES AIR Limited NU-545 Class II, Type A2 Biosafety Cabinet | LabGard® ES (Energy Saver) Class II Biosafety Cabinets | LabGard® ES NU-610 Dual Access Class II, Type A2 Animal Handling Biosafety Cabinet | LabGard® ES TE NU-565 Class II, Type B2 Biosafety Fume Hood |
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| Catalog Number | NU-427 | NU-545 | LabGard | NU-610 | NU-565 |
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| Class/Type | Class II, Type B1 | Class II, Type A2 | Class II, Type A2 | Class II, Type A2 | Class II, Type B2 |
| Air Inflow Rate | 105 fpm (0.53 m/s) | 105 fpm (0.53 m/s) | 105 fpm (0.53 m/s) | 105 fpm (0.53 m/s) | 105 fpm (0.53 m/s) |
| Size(s) | 4, 6-foot (1.2, 1.8-meter) | 3, 4, 5, 6-foot (0.9, 1.2, 1.5, 1.8-meter) | 3, 4, 5, 6-foot (0.9, 1.2, 1.5, 1.8-meter) | 6ft | 4, 6-foot (1.2, 1.8-meter) |
| Exterior Dimensions | varies with model | Varies with model | Varies with model | (WxHxD) 2007x2108x829 mm (79x83x33 in) | varies with model |
| Interior Dimensions | varies with model | Varies with model | Varies with model | (WxHxD) 1626x635x718 mm (64x25x28.25 in) | varies with model |
| Recirculated/Exhausted Air | 30% / 70% | 70% / 30% | 70% / 30% | 70% / 30% | Inquire |
| Description | 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® 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 | NuAire Biological Safety Cabinets protect whats valuable providing personnel, product and/or environmental protection when looking to obtain optimum control over product quality while reducing the potential for exposure. Ergonomic Biosafety Cabinet design improves laboratory safety practices and NuAire Biological Safety Cabinets protect whats valuable providing personnel, product and/or environmental protection when looking to obtain optimum control over product quality while reducing the potential for exposure. Ergonomic Biosafety Cabinet design improves laboratory safety practices and process accuracy.
The LabGard® ES NU-540 Class II, Type A2 Laminar Flow Biological Safety Cabinet (LFBSC) 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 agents in low to moderate risk-hazard research and drug preparation. The NU-540 offers economical operation through the use of an ultra high efficiency motor to maximize filter life and monolithic silicone-free construction for long product life.
The LabGard® Air NU-543 Class II, Type A2 Biological Safety Cabinet offers the very best in personnel, product, and environmental protection by monitoring and controlling real-time airflow through the use of an airflow sensor, and displays airflow speeds on the OLED interface. The ability to choose up to three different access opening heights allows our customers the option to select a larger access opening to improve technician movement and reach; select a smaller access opening to lower your total cost of ownership; or select somewhere in-between to get the best of both heights.... 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 | The LabGard ES (Energy Saver) Model NU-565 Laminar Flow Biosafety Fume Hood/Cabinet is a bench/table top model, optionally available with a base support stand, for operation as a console model. The LabGard model NU-565 utilizes an Energy Saver DC ECM motor optimally determined forward curved fan forThe LabGard ES (Energy Saver) Model NU-565 Laminar Flow Biosafety Fume Hood/Cabinet is a bench/table top model, optionally available with a base support stand, for operation as a console model. The LabGard model NU-565 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 Fume Hood/Cabinet, 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 Biosafety Fume Hood/Cabinet, 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.
The NU-565 Bench meets the requirements of a Class II, Type B2 since the cabinet conforms to the following requirements:
- Maintain a minimum average inflow velocity of 100 fpm (0.51m/s) through the work access opening;
- Have HEPA filtered downflow air drawn from the laboratory or the outside air (i.e. downflow air is not re-circulated from the cabinet exhaust air)
- Exhaust all inflow and downflow air to the atmosphere through a hard connection to the facility exhaust system after filtration through a HEPA filter without recirculation in the cabinet or return to the laboratory;
- Have all contaminated ducts and plenums under negative pressure or surrounded by directly exhausted (non-re-circulated through the work area) negative pressure ducts and plenums.
Type B2 Biosafety Fume Hood/Cabinet classified to UL 1805 may be used for work with flammable or volatile chemicals and radionuclides required if permitted by chemical risk assessment.... Read More |
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