Biosafety and Clean-Air Equipment
Class II Type A2 Biosafety Cabinet
Designed for controlled handling of microbiological, diagnostic, cell-culture and research samples that may generate aerosols or droplets. The cabinet combines inward front airflow, filtered vertical downflow and filtered exhaust to support personnel, product and environmental protection.
Professional Overview
Controlled containment for biological laboratory workflows.
The ALC-Scientific Class II Type A2 Biosafety Cabinet is intended for laboratories requiring controlled containment while handling biological materials. It is suitable for microbiology, clinical diagnostics, pharmaceutical quality control, biotechnology, cell culture and academic research. A typical Type A2 airflow system recirculates approximately 70% of filtered air and discharges approximately 30% through an exhaust filter. Depending on the finalized model, the cabinet may be configured with HEPA or ULPA filtration, a stainless-steel work zone, airflow monitoring, a manual or motorized sash and a microprocessor-based controller.
Technical Specifications
General configuration framework.
Final values must be confirmed against the selected ALC-Scientific model and approved manufacturing datasheet.
| Parameter | Specification |
|---|---|
| Product type | Biological Safety Cabinet |
| Classification | Class II, Type A2 |
| ALC model number | To be confirmed |
| Nominal working width | 2 ft, 3 ft, 4 ft or 6 ft reference configurations |
| Protection intent | Personnel, product and environmental protection |
| Airflow arrangement | Inward front airflow with vertical filtered downflow |
| Typical air recirculation | Approximately 70% |
| Typical filtered exhaust | Approximately 30% |
| Supply and exhaust filters | HEPA or ULPA, configuration-dependent |
| HEPA reference efficiency | 99.97% at 0.3 µm |
| ULPA reference efficiency | 99.9995% at 0.12 µm |
| Airflow velocity | To be confirmed |
| Interior construction | SS 304 or SS 316; selected grade to be confirmed |
| Exterior construction | Powder-coated mild steel |
| Work surface | Removable or single-piece recessed stainless-steel tray |
| Front sash | Manual or motorized, model-dependent |
| Controller | Microprocessor-based controller; exact functions to be confirmed |
| Display | LCD/keypad or touchscreen, model-dependent |
| Blower motor | AC/DC-ECM option in applicable configurations |
| Reference noise level | ≤65 dB or <65 dB, depending on configuration |
| Internal lighting | To be confirmed |
| UV lamp | Optional/model-dependent; rating to be confirmed |
| Electrical sockets | Model-dependent |
| Power supply | To be confirmed |
| Power consumption | To be confirmed |
| Weight | To be confirmed |
| Operating conditions | To be confirmed |
| Warranty | To be confirmed |
| Compliance status | To be confirmed for each model |
Reference Size Configurations
Engineering values requiring ALC model confirmation.
| Working size | Filter / controller | Internal size | External without stand | External with stand | Inflow | Downflow | Noise |
|---|---|---|---|---|---|---|---|
| 2 × 2 × 2 ft | ULPA / Touchscreen | 605 × 500 × 540 mm | 705 × 650 × 1290 mm | 705 × 650 × 2220 mm | 290 m³/h | 360 m³/h | ≤65 dB |
| 2 × 2 × 2 ft | HEPA / LCD-Keypad | 610 × 610 × 610 mm | 774 × 764 × 1690 mm | 774 × 764 × 2400 mm | 240 m³/h | 442 m³/h | <65 dB |
| 3 × 2 × 2 ft | ULPA / Touchscreen | 910 × 600 × 660 mm | 1087 × 775 × 1458 mm | 1085 × 765 × 2220 mm | 445 m³/h | 649 m³/h | ≤65 dB |
| 3 × 2 × 2 ft | HEPA / LCD-Keypad | 910 × 610 × 610 mm | 1085 × 765 × 1690 mm | 1085 × 765 × 2400 mm | 445 m³/h | 649 m³/h | <65 dB |
| 4 × 2 × 2 ft | ULPA / Touchscreen | 1210 × 600 × 660 mm | 1383 × 775 × 1290 mm | 1383 × 775 × 2220 mm | 587 m³/h | 863 m³/h | ≤65 dB |
| 4 × 2 × 2 ft | HEPA / LCD-Keypad | 1220 × 610 × 610 mm | 1382 × 764 × 1690 mm | 1382 × 764 × 2400 mm | 595 m³/h | 884 m³/h | <65 dB |
| 6 × 2 × 2 ft | ULPA / Touchscreen | 1700 × 600 × 660 mm | 1873 × 775 × 1290 mm | 1873 × 775 × 2220 mm | 824 m³/h | 1212 m³/h | ≤65 dB |
| 6 × 2 × 2 ft | HEPA / LCD-Keypad | 1829 × 610 × 610 mm | 1991 × 764 × 1690 mm | 1995 × 764 × 2400 mm | 892 m³/h | 1325 m³/h | <65 dB |
Applications
Typical laboratory use cases.
Industries Served
Designed for regulated and research-focused environments.
Working Principle
How the Type A2 airflow system operates.
Inward air barrier
Room air enters through the front access opening and is drawn into the front intake grille to reduce outward escape of cabinet air.
Filtered downflow
Filtered air moves vertically over the working zone to support controlled sample handling and reduce cross-contamination risk.
Internal recirculation
A typical Type A2 cabinet recirculates approximately 70% of filtered air through the internal airflow system.
Filtered exhaust
Approximately 30% passes through the exhaust filter before discharge to the room or an approved canopy connection.
Construction and Design
Practical features for cleaning, monitoring and serviceability.
External body
Powder-coated mild-steel construction. Sheet thickness, coating process and final colour are to be confirmed for the selected ALC model.
Internal chamber
SS 304 or SS 316 working chamber option with a removable or recessed stainless-steel work tray for routine cleaning and minor spill containment.
Airflow plenum
Negative-pressure contaminated-air passages are intended to reduce the risk of unfiltered cabinet air escaping into the laboratory.
Front sash
Manual or motorized configurations may be offered. Sash-position monitoring and remote movement are model-dependent.
Control panel
LCD/keypad or touchscreen option. Functions may include airflow status, filter life, UV life, sash position, blower status and operating time.
Stand and mobility
Floor stand and lockable caster option for installation and controlled repositioning. Stand height and load rating are to be confirmed.
Safety and Compliance
Protection features and responsible application limits.
Potential safety provisions
- Inward airflow at the front opening
- Vertical filtered downflow
- HEPA- or ULPA-filtered exhaust
- Negative-pressure contaminated-air plenum
- Airflow-status and filter-life monitoring options
- Sash-position monitoring option
- Recessed work tray for minor spill containment
Compliance statement
Compliance and certification details: To be confirmed based on the selected model.
Do not apply NSF/ANSI 49, CE or any other certification mark to an ALC-Scientific model unless the exact product is supported by valid certification documents and test records.
Available Variants
Reference working-width selection.
| Variant | Working width | Key difference | Recommended application |
|---|---|---|---|
| Compact | 2 ft | Reduced footprint | Low-volume laboratories and restricted spaces |
| Compact Standard | 3 ft | Increased usable work zone | Diagnostic and academic laboratories |
| Standard Laboratory | 4 ft | General-purpose width | Routine microbiology, cell culture and research |
| Large Working Area | 6 ft | Expanded work surface | Higher sample volume and multi-equipment workflows |
Final ALC-Scientific model codes and available variants: To be confirmed.
Accessories and Utilities
Configuration options and installation requirements.
Technically relevant optional accessories
- UV germicidal lamp
- Motorized sash and remote-control unit
- Adjustable floor stand with lockable casters
- Canopy or thimble exhaust connection
- External exhaust ducting kit
- Additional electrical sockets
- Gas or vacuum service tap
- Replacement HEPA or ULPA filter
- Voltage stabilizer or online UPS
- Airflow testing and certification service
Installation and utility requirements
- Electrical supply: To be confirmed
- Electrical earthing: Required
- Dedicated circuit: Recommended; rating to be confirmed
- Water: Not normally required unless selected as a service
- Gas/vacuum: Optional approved service connection
- Floor: Level and capable of supporting the installed unit
- Room location: Away from doors, strong drafts and disruptive air outlets
- Operating conditions: To be confirmed
- On-site certification: Required before routine use
Maintenance and Support
Routine practices supporting reliable containment.
Cleaning
Clean and disinfect the work surface, chamber and accessible area below the removable tray using materials compatible with the cabinet and laboratory procedure.
Airflow protection
Keep front and rear grilles free from instruments, paper and other obstructions. Avoid working practices that create rapid or disruptive air movement.
Inspection
Periodically inspect the sash, seals, service fixtures, electrical sockets, drain system and operating alarms according to the maintenance schedule.
Filter service
HEPA or ULPA filter replacement and internal repairs should be performed by qualified personnel following appropriate decontamination procedures.
Certification
Verify airflow and filter integrity at installation, periodically—commonly annually—and after relocation, airflow-related repairs or filter replacement.
ALC support scope
Installation, operator training, preventive maintenance, airflow testing, calibration coordination and replacement-part support are available subject to quotation.
Product Advantages
Practical operational benefits.
Frequently Asked Questions
Technical questions before model selection.
What protection does a Class II Type A2 biosafety cabinet provide?
When correctly installed, certified and operated, it is designed to support personnel, product and environmental protection using inward airflow, filtered downflow and filtered exhaust.
Which working width should be selected?
Selection depends on available laboratory space, sample volume, equipment placed inside the work zone and the workflow. Reference widths include 2 ft, 3 ft, 4 ft and 6 ft.
Can the cabinet be externally exhausted?
An approved canopy or thimble connection may be considered where required. The building exhaust arrangement must not interfere with cabinet airflow or containment.
Can volatile toxic chemicals be used inside it?
A standard recirculating Type A2 cabinet is not intended for routine use with significant quantities of volatile toxic chemicals or radionuclides. A formal risk assessment is required.
What information is needed for an accurate quotation?
Provide the working width, application, installation city, room and utility conditions, external exhaust requirement, required accessories and documentation or certification expectations.
Related Products
Complementary clean-air and sterilization equipment.
Technical Enquiry
Request model selection and commercial quotation.
Share your required size, application, quantity, delivery city, utility conditions and customization requirements. ALC-Scientific can assist with OEM configuration, installation, training, airflow testing, calibration coordination and after-sales support.