Class II cabinets are defined as ventilated cabinets used primarily for microbiological or chemotherapy studies, designed to protect personnel, products, and the environment. In some laboratories, these protections are referred to as cell culture or tissue culture. Class II BSCs are designed with an open front section featuring inward airflow (personnel protection), downward HEPA-filtered laminar airflow (product protection), and HEPA-filtered exhaust air (environmental protection). All Class II BSCs require that all biologically contaminated ducts and areas be under negative pressure or surrounded by negative pressure ducts and areas. This provides a fail-safe feature that protects the user even in the event of a malfunction. 

CLASS II TYPE A2 BIOSAFETY CABINETS (EN 12469 CERTIFIED) 

Class II Type A2 biosafety cabinets are the most commonly used type of BSC today. Type A2 cabinets must maintain a minimum average flow velocity of 0.40 m/s at the wing opening. While part of the incoming air is expelled outside the cabinet, the remaining portion is recirculated within the cabinet. Type A2 BSCs generally return HEPA-filtered air to the laboratory in which they are located. The recirculated, HEPA-filtered, linear flow air creates an environment that protects samples in the work area from contamination. Laminar (unidirectional/linear) downward airflow helps prevent cross-contamination within the cabinet and between samples. 

ADVANCED CONTROL PANEL 

The control panel is a touch-sensitive digital/LCD display. 

On the screen; 

• Air flow rate, 
• • Total operating time, 
• • Current date/time, 
• • Cabin temperature, 
• • Timer, 
• • HEPA filter life, 
• • Front glass, 
• • UV lamp, 
• • Total operating time/lifespan of the UV lamp, 
• • UV lamp countdown timing, 
• • Flow rate of particle-free air supplied to the working area. 

UNIQUE DESIGN 

The device uses an H14 aluminium casing and double-sided protected H14 filters. Wood or fibreboard is absolutely not used in the filter group. 

The cabinet has two EN 1822 H14 HEPA filters: one for downflow and one for exhaust. 

Our device features a dynamically balanced, continuously lubricated centrifugal or direct-drive fan/motor on two planes, designed to meet standards for low noise, low vibration, and extended service life. It utilises the latest generation of energy-efficient fans capable of maintaining a constant airflow despite fluctuations in building voltage. 

A steel plenum with negative pressure is located between the exhaust filter placed in the upper section of the device and the supply (main) filter placed at the ceiling of the working volume, through which the air is discharged and then pushed back into the cabin. 

HIGH-LEVEL PROTECTION 

The Biosafety cabinet we have manufactured protects the operator and the laboratory environment within the working area against particles generated within the working area, protects the product and process within the working area against airborne contaminants in the ambient air, and protects the employee, the working environment, and the product being worked on against cross-contamination. 

The side walls of the device are closed. The side walls are airtight to the outside environment and there are no surfaces that could cause contaminants to accumulate. Maximum protection is ensured by negative pressure. 

All performance criteria have been verified and the test data to be provided upon request are specified below; 

• Input current rate measured using the direct input current measurement method, 
• • Downstream velocity and laminar flow, 
• • Filter leakage screening tests using aerosol testing for both filters. 

OPTIONAL REQUESTS 

• Customised Production with Specific Dimensions and Features (Dimensions/Software/Program) 
• • 4.3 / 5.5 and 7.2 Inch Screen Options. 
• • Pre-Filter, 
• • Activated Carbon Pre-Filter, 
• • ULPA Filter, 
• • Workstation Mounting Bracket, 
• • Revision for Microscope Integration, 
• • Interface for Remote Access, 
• • Carbon Filter, 
• • Temperature/Humidity Sensor, 
• • Process Parameter Recording System.

ACCESSORIES 

• Incinerator, 
• • Bead steriliser, 
• • Height-adjustable transport stand, 
• • Portable UV lamp, 
• • Service valves for gas and air, 
• • Wheeled transport stand, 
• • Forearm support device.