Lab Biosafety Cabinet - Equipment Materials: Metal

Biosafety Cabinet (Class II A2) Typical Specifications
1. Airflow System

Inflow velocity: 0.45 0.55 m/s

Downflow velocity: 0.30 0.35 m/s

Airflow pattern:

70% recirculated air

30% exhausted air

Maintains negative pressure for operator safety

2. Filtration System

HEPA / ULPA filters:

Efficiency: 99.99 99.999% at 0.3 um

Usually:

2 filters (supply + exhaust)

Cleanliness:

ISO Class 5 / Class 100 environment

3. Cabinet Construction

Material:

Interior: Stainless steel (SS 304/316)

Exterior: Powder-coated steel

Front sash:

Toughened glass ( 5 mm), UV-resistant

Working height:

700 750 mm

Opening:

Working opening: 200 mm

4. Dimensions (Typical Range)

Internal working area:

1000 1300 mm (W) 600 700 mm (D) 600 mm (H)

External size:

1200 1500 mm (W) 700 800 mm (D) 1900 2200 mm (H)

5. Lighting & Electrical

Illumination:

700 1000 lux

UV lamp:

15 30 W (for sterilization)

Power supply:

220 240 V, 50 Hz

Power consumption:

500 1500 W

6. Noise & Vibration

Noise level:

60 65 dB

7. Performance & Safety

Protection:

Personnel, product, and environment

Cross-contamination:

2 CFU (colony forming units)

Standards:

NSF/ANSI 49

EN 12469

8. Additional Features

Microprocessor control panel

Airflow alarms (low/high flow)

Filter life indicator

Motorized front sash

UV timer & interlock system

a Types of Biosafety Cabinets (Quick Comparison)
TypeAir RecirculationExhaustUse Case
Class II A270%30%General microbiology
Class II B130%70%Low chemical use
Class II B20%100%Toxic chemicals
Summary

A standard lab biosafety cabinet:

Uses HEPA-filtered laminar airflow

Maintains negative pressure

Ensures triple protection (personnel + product + environment)

Operates with controlled airflow velocities and strict filtration efficiency

If you want, tell me:

Lab type (microbiology, pharma, hospital, BSL level)

Budget or size

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