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 |
| Item | Allergard™ ES NU-608 Class I Animal Refuse Workstation | LabGard® ES NU-677 Class II, Type A2 Animal Handling Biosafety Cabinet |
| Catalog Number | NU-608 | NU-677 |
| Price | | |
| Class/Type | Class I | Class II, Type A2 |
| Air Inflow Rate | Inquire | 105 fpm (0.53 m/s) |
| Size(s) | Inquire | 4, 5, 6-foot (1.2, 1.5, 1.8-meter) |
| Recirculated/Exhausted Air | 100% Exhausted | Inquire |
| Exterior Dimensions | varies by model | varies with model |
| Interior Dimensions | (WxDxH) 46.4 x 29.75 x 28.1 in (1178 x 715 x 715 mm) | varies with model |
| Description | Inquire | The LabGard ES (Energy Saver) Model NU-677 Animal Handling Biosafety Cabinet (LFBSC) is a bench/table top model, with an integral castored support stand for operation as a console model. The LabGard model NU-677 utilizes an Energy Saver DC ECM motor optimally determined forward curved fan for each The LabGard ES (Energy Saver) Model NU-677 Animal Handling Biosafety Cabinet (LFBSC) is a bench/table top model, with an integral castored support stand for operation as a console model. The LabGard model NU-677 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 via a solid-state DC motor controller that provides 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 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-677 bench LFBSC is known as a Class II, Type A2 Biosafety Cabinet. This is possible since NuAire's cabinet conforms to the following requirements:
- Maintain a minimum average s inflow velocity of 100 ft/min (0.51 m/s) through the work access opening;
- Have HEPA/ULPA filtered downflow air that is a portion of the mixed downflow and inflow air from a common exhaust plenum;
- May exhaust HEPA/ULPA filtered air back into the laboratory or to the environment through an external exhaust system connected to the cabinet with a canopy connection; and
- Have all biologically contaminated ducts and plenums under negative pressure or surrounded by negative pressure ducts and plenums.
If working with volatile chemicals, the unit must be connected to an external exhaust system. Type A2 cabinets may be used for work with volatile chemicals if permitted by a chemical risk assessment.... Read More |
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