The cabinet most laboratories actually need
Class II Type A2 Biosafety Cabinets
WSHLab’s Type A2 Biosafety Cabinet range provides personnel, product and environmental protection for routine laboratory work. Each Class II Type A2 BSC recirculates 70% of HEPA-filtered air and exhausts 30%. Available in 3–6 ft sizes with three airflow monitoring configurations, the range requires no dedicated exhaust ducting for standard biological applications.
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WSHLab A2 Standard Biosafety Cabinet
- Airflow class
- Class II Type A2 — 30% exhausted, 70% recirculated
- Downflow velocity
- 0.33 ± 0.025 m/s
- Inflow velocity
- 0.53 ± 0.025 m/s
- Filter
- ULPA U15, 99.9995% at 0.12 µm, supply and exhaust
Price on request -
WSHLab A2 Advanced Biosafety Cabinet
- Airflow class
- Class II Type A2 — 30% exhausted, 70% recirculated
- Downflow velocity
- 0.33 ± 0.025 m/s
- Inflow velocity
- 0.53 ± 0.025 m/s at the tested sash height
- Sash opening
- 12 in / 305 mm standard; 14 in / 356 mm on the 6 ft model
Price on request -
WSHLab A2 Premium Biosafety Cabinet
- Airflow class
- Class II Type A2 — 30% exhausted, 70% recirculated
- Downflow velocity
- 0.33 ± 0.025 m/s
- Inflow velocity
- 0.53 ± 0.025 m/s
- Control
- Pressure sensor, digital display, alarm history, BMS dry contacts
Price on request -
WSHLab A2 Compact Biosafety Cabinet
- Airflow class
- Class II Type A2 — 30% exhausted, 70% recirculated
- Downflow velocity
- 0.33 ± 0.025 m/s
- Inflow velocity
- 0.53 ± 0.025 m/s
- Filter
- ULPA U15, 99.9995% at 0.12 µm
Price on request -
WSHLab A2 Floor-Standing Biosafety Cabinet
- Airflow class
- Class II Type A2 — 30% exhausted, 70% recirculated
- Downflow velocity
- 0.33 ± 0.025 m/s
- Inflow velocity
- 0.53 ± 0.025 m/s
- Sash operation
- Manual (GL) or motorised (HA)
Price on request
TECHNICAL DATA
Type A2 airflow architecture
A single EC blower drives air through the supply ULPA filter into the work zone. The plenum is held under negative pressure, so a seal failure moves room air inward rather than contaminated air outward.
Class II Type A2 Biosafety Cabinets
View ProductWSHLab A2 Floor-Standing Biosafety Cabinet
- Airflow class
- Class II Type A2 — 30% exhausted, 70% recirculated
- Downflow velocity
- 0.33 ± 0.025 m/s
- Inflow velocity
- 0.53 ± 0.025 m/s
- Sash operation
- Manual (GL) or motorised (HA)
- Work surface height
- 750 mm
- Filter
- ULPA U15, 99.9995% at 0.12 µm
- Working widths
- 2 ft / 0.6 m to 6 ft / 1.8 m
- External dimensions
- 700-1800 × 800 × 2200-2260 mm (W × D × H)
- Internal dimensions
- 600-1625 × 600 × 650 mm (W × D × H)
- Exhaust volume
- 230-520 m³/h depending on width
- Power
- 1100 VA plus 500 W socket load
- Noise
- ≤65 dB(A)
- Width
- 2 ft / 0.6 m · 3 ft / 0.9 m · 4 ft / 1.2 m · 6 ft / 1.8 m
- Work Access Opening
- 10 in / 254 mm · 8 in / 203 mm
- Electrical
- 230V
- Performance Standard
- CE · EN-12469
- Application
- Tissue Culture
- Control System
- Pressure Sensor · Single Airflow Sensor
Applications
Where a Type A2 cabinet fits
Biological work without volatile toxic chemicals.
Vivarium cage changing with a 12 in sash opening
USP 797 sterile compounding with pressure monitoring
Microbiology and sample processing
Teaching and training laboratories
PERFORMANCE & SELECTION
How the airflow works
Room air enters through the front grille and the sash opening, splits into downflow and inflow, and the mixed air passes through the supply filter. Thirty per cent is pushed out through the exhaust filter; the rest returns to the work zone.
- Downflow 0.33 ± 0.025 m/s, inflow 0.53 ± 0.025 m/s
- 70% recirculated through the supply ULPA filter
- 30% exhausted through the exhaust ULPA filter into the room
- Negative pressure plenum between the two filters
CONFIGURATION & COMPATIBILITY
When A2 stops being the right choice
The recirculation ratio is the constraint. Anything that evaporates in the work zone will be carried back over your sample and into the room.
- Volatile toxic chemicals — use Type B1 or B2
- Cytotoxic drug preparation — use Type B2
- Radionuclides — use Type B2
- Large-volume solvent work — use Type B2
IDENTIFICATION & TRACEABILITY
Clear Product Identification & Specification
Product names, model numbers, SKUs and option identifiers keep quotations, orders and internal records aligned.
- Product and model identification
- Option-specific SKU information
- Consistent quotation specifications
PRODUCT IDENTIFICATIONClass II Type A2 Biosafety Cabinets
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- Safety & compliance
- Products
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- Selection
- Specification-led
Traceability
Traceable Supply & Quality Inspection
Documentation and inspection requirements are confirmed against the selected product and order.
- Product identification records
- Pre-delivery checks
- Documents available on request
Quality system
Factory test data
Every A2 cabinet is measured, not sampled.
Downflow and inflow velocity mapped across the work zone
PAO scan of both filter seals
Noise ≤65 dB(A), illumination ≥1000 lx
Electrical safety IEC 61010-1, EMC IEC 61326
Why WSHLab
What you get with a WSHLab A2 cabinet
The A2 range is built to be specified once and serviced for a decade: common filters, common blower, common controller across 3 ft to 6 ft.
ULPA U15 supply and exhaust filters, 99.9995% at 0.12 µm
ISO Class 4 work zone at the tested sash height
304 stainless steel work zone, one-piece, coved corners
EC blower with constant airflow and filter-load compensation
Motorised sash with anti-pinch and height alarm
No ductwork, so the cabinet can be relocated without a building project
OPTIONS & SPECIFICATIONS
Class II Type A2 Biosafety Cabinets Options & Specifications
Choose the format that suits your application, workload and handling requirements.
70% recirculation
30% exhaust
No ductwork required
Tissue culture and cage changing
NSF 49 or EN 12469
3 ft to 6 ft widths
| Type | Capacity / Option | Material / Specification | Suitable Application | Storage / Handling |
|---|---|---|---|---|
| 70% recirculation | By selected product | Product-specific configuration | Confirm with our team | Follow product guidance |
| 30% exhaust | By selected product | Product-specific configuration | Confirm with our team | Follow product guidance |
| No ductwork required | By selected product | Product-specific configuration | Confirm with our team | Follow product guidance |
| Tissue culture and cage changing | By selected product | Product-specific configuration | Confirm with our team | Follow product guidance |
| NSF 49 or EN 12469 | By selected product | Product-specific configuration | Confirm with our team | Follow product guidance |
| 3 ft to 6 ft widths | By selected product | Product-specific configuration | Confirm with our team | Follow product guidance |
Delivery and site
Class II Type A2 Biosafety Cabinets Handling & Care Guide
Follow the product manual and site procedures for safe installation, use and maintenance.
- 01
Check Product & Accessories
Confirm model, options and supplied components.
- 02
Review Product Documentation
Read installation and safety instructions before use.
- 03
Prepare the Working Environment
Confirm space, utilities and operating conditions.
- 04
Plan Routine Care
Follow cleaning, inspection and maintenance guidance.
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QUESTIONS & ANSWERS
Class II Type A2 Biosafety Cabinets: frequently asked questions
The questions buyers ask most often when specifying Class II Type A2 Biosafety Cabinets, answered by our technical team.
Does a Type A2 cabinet need to be ducted?
No. The 30% exhaust passes through a ULPA filter and returns to the room, so no duct connection is required. Some facilities choose to canopy-duct the exhaust for heat load reasons, but it is not a containment requirement.
Can I use a Type A2 cabinet for hazardous drugs?
No. USP 800 requires external exhaust with no recirculation for hazardous drug compounding. Use a Type B2 total exhaust cabinet instead.
What width do I need for two operators?
A 6 ft (1.8 m) cabinet gives two operators a comfortable working width with a 12 in sash opening. A 4 ft cabinet is comfortable for one operator and is the most common choice for cell culture.
GET A QUOTATION
Size your A2 cabinet
Tell us the working width you need, the voltage and whether your auditor expects NSF 49 or EN 12469. We will confirm the model and the lead time.