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 |
Item | LabGard ES AIR NU-543 Class II, Type A2 Biosafety Cabinet | LabGard ES (Energy Saver) NU-540 Class II, Type A2 Bioafety Cabinet | LabGard® ES LP NU-640 Class II, Type A2 Animal Handling Biological Safety Cabinet |
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Catalog Number | NU-543 | NU-540 | NU-640 Series |
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Class/Type | Class II, Type A2 | Class II, Type A2 | Class II, Type A2 |
Air Inflow Rate | 105 fpm (0.53 m/s) | 105 fpm (0.53 m/s) | 0.53 m/s |
Size(s) | 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) | Inquire |
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) |
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) |
Recirculated/Exhausted Air | 70% / 30% | 70% / 30% | 70% Recirculated / 30% Exhausted |
Description | LabGard® ES (Energy Saver) AIR model NU-543 is defined as a Class II, Type A2 Biosafety Cabinet (BSC) providing the very best in personnel, product, and environmental protection. LabGard AIR features a single ultrahigh efficiency motor with a precision-engineered forward curve fan to increase LabGard® ES (Energy Saver) AIR model NU-543 is defined as a Class II, Type A2 Biosafety Cabinet (BSC) providing the very best in personnel, product, and environmental protection. LabGard AIR features a single ultrahigh efficiency motor with a precision-engineered forward curve fan to increase filter load capability and extend filter life. The motor is controlled to airflow setpoints by the FlowGard electronic control system with an integrated motor controller that provides automatic compensation for both filter loading and line voltage variances. Airflow velocity is monitored with the Intelliflow digital dual thermistor airflow sensor.
Highlights
Monolithic cabinet shell
Choose from 3 access opening heights [8, 10, 12-inches (203, 254, 305 mm)]
Up to 3 service valves each sidewall, smooth interior option
NSF approved cord pass through right side wall
NSF/ANSI 49, EN12469, UL-C, & CE Listed... 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 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 |
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