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The WIST Biosafety Cabinet Class II Type B2 is a safety enclosure designed to protect the operator, product, and environment during work with hazardous materials. It features 100% exhaust with no air recirculation, making it suitable for handling toxic chemicals, fumes, and biohazardous agents. The cabinet includes dual HEPA filters and a stainless steel work surface for contamination control and easy cleaning. It is commonly used in pharmaceutical, clinical, and research laboratories, meeting international biosafety standards for safe microbiological work.
| Feature | Class II A2 | Class II B2 |
| Biosafety Class | Class II A2 | Class II B2 |
| Air Recirculation | 70% recirculated, 30% exhausted | 100% exhausted (no recirculation) |
| Ducting Requirement | Optional (can be ducted or ductless) | Mandatory hard ducting to external exhaust |
| Suitable For | Microbiological work with low-risk chemicals | Handling toxic chemicals, radionuclides, and biohazards |
| Personnel Protection | Yes | Yes |
| Product Protection | Yes | Yes |
| Environmental Protection | Partial (due to partial exhaust) | Full (100% exhaust ensures no contamination) |
| Exhaust HEPA Filter | Yes | Yes (with optional virus burn unit) |
| Use with Volatile Chemicals | Not recommended | Strongly recommended |
| Power Consumption | Lower | Higher |
| Initial Cost | Lower | Higher |
| Maintenance Complexity | Simple | Requires ducting and external blower system |
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