Biological safety cabinets (biosafety cabinets) come in several classes (I, II, and III) that offer varying levels of protection from hazardous or contagious materials. For all classes of biological safety cabinet, the air is HEPA (high efficiency particulate air)-filtered before being released as exhaust. A Class I biosafety cabinet is designed to protect the user and the environment, not the sample as negative pressure is used to pull outside air in across the workspace.
Class II biological safety cabinets are divided into four subtypes (A1, A2, B1, and B2) and have the additional feature of protecting the sample as the air supply is HEPA-filtered before passing over the workspace. The Class II subtypes differ in the amount of recirculated air within the cabinet.
Class III biosafety cabinets (also known as gloveboxes) provide maximum protection for work in biosafety level 4 containment labs. A class III biosafety cabinet is a hermetically-sealed glovebox with access through a dunk tank or double-door box that allows for decontamination.
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| Company | NuAire | NuAire | NuAire | NuAire | NuAire |
| Item | LabGard NU-813 Class I Containment Ventilated Enclosure (CVE) | Allergard™ ES NU-608 Class I Animal Refuse Workstation | LabGard ES (Energy Saver) CYTO Class II, Type A2 Biosafety Cabinet | LabGard ES (Energy Saver) NU-540 Class II, Type A2 Bioafety Cabinet | LabGard TE (Total Exhaust) NU-560 Class II, Type B2 Biosafety Cabinet |
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| Catalog Number | NU-813 | NU-608 | NU-581 | NU-540 | NU-560 |
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| Class/Type | Class I | Class I | Class II, Type A2 | Class II, Type A2 | Class II, Type B2 |
| Air Inflow Rate | 80 fpm | Inquire | 105 fpm (0.53 m/s) | 105 fpm (0.53 m/s) | 105 fpm (0.53 m/s) |
| Size(s) | 3, 4, 6-foot (0.9, 1.2, 1.8-meter) | Inquire | 4, 5, 6-foot (1.2, 1.5, 1.8-meter) | 3, 4, 5, 6-foot (0.9, 1.2, 1.5, 1.8-meter) | 4, 6-foot (1.2, 1.8-meter) |
| Recirculated/Exhausted Air | 0% / 100% | 100% Exhausted | Inquire | 70% / 30% | Inquire |
| Exterior Dimensions | varies with model | varies by model | varies with model | varies with model | varies with model |
| Interior Dimensions | varies with model | (WxDxH) 46.4 x 29.75 x 28.1 in (1178 x 715 x 715 mm) | varies with model | varies with model | varies with model |
| Description | The LabGard Containment Cabinet NU-813 is offered as a Class I Containment Cabinet equipped with a HEPA filter. In the Class I configuration, the NU-813 provides personnel protection for handling low risk aerosols and particulate matter. Room air enters the Cabinet, flowing past the operator into The LabGard Containment Cabinet NU-813 is offered as a Class I Containment Cabinet equipped with a HEPA filter. In the Class I configuration, the NU-813 provides personnel protection for handling low risk aerosols and particulate matter. Room air enters the Cabinet, flowing past the operator into the work access opening providing an air barrier which minimizes contaminants generated within the cabinet work zone from migrating into the room. The air flows through the cabinet carrying contaminants with it, exiting through a HEPA filter as a Class I Cabinet.... Read More | Inquire | 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 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 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.... Read More | The LabGard ES (Energy Saver) Model NU-560 Laminar Flow Biosafety Cabinet (LFBSC) is a bench/table top model, optionally available with a base support stand, for operation as a console model. The LABGARD® ES model NU-560 utilizes an Energy Saver DC ECM motor optimally determined forward curved fan The LabGard ES (Energy Saver) Model NU-560 Laminar Flow Biosafety Cabinet (LFBSC) is a bench/table top model, optionally available with a base support stand, for operation as a console model. The LABGARD® ES model NU-560 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 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.
The NU-560 Bench LFBSC 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 cabinets may be used for work with nonflammable or explosive volatile chemicals and radionuclides required if permitted by chemical risk assessment.... Read More |
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