Class III Bio Safety Cabinet

  • Aeromech™ Class III biological safety cabinet provides an absolute level of safety, which cannot be attained with Class I and Class II cabinets. All Class III cabinets are usually of welded metal construction and are designed to be gas tight.
  • Work is performed through glove ports in the front of the cabinet. During routine operation, negative pressure relative to the ambient environment is maintained within the cabinet. This provides an additional fail-safe mechanism in case physical containment is compromised. On all Class III cabinets, a supply of HEPA filtered air provides product protection and prevents cross contamination of samples. Exhaust air is usually HEPA filtered and incinerated.
  • Alternatively, double HEPA filtration with two filters in series may be utilized. Materials are transferred into the cabinet using a pass-through unit installed at the side of the work area. Class III cabinets usually exhaust air back to the laboratory; however, air may also be exhausted via a dedicated ductwork system to the external environment. When a dedicated ductwork system is employed, they are also suitable for work employing toxic chemicals as an adjunct to microbiological processes. All Class III biological safety cabinets are suitable for work with microbiological agents assigned to biosafety levels 1, 2, 3 and 4. They are frequently specified for work involving the most lethal biological hazards.
1 Product Aeromech ® Class III Bio safety Cabinet
2 Air balancing 0% recirculation.100% exhaust
3 Protection  Product & Personnel & Environmental protection
4 Bio safety Level Bio safety Level 1 , 2 , 3 & 4
5 Exhaust Duct Requirement Inside the room / Hard Duct Only
6 Control Plenum surrounded by Negative Plenum
7 Cleanliness level ISO class 5 as per ISO 14644-1
8a Negative Pressure  Pressure differential between chamber and environment , Closed >0.5” WC
8b Front Sash Airtight construction with Glove Port Arrangement
9 Noise level 60 db on A scale
10 Light Intensity Minimum 900 lux inside the working area at ambient zero
11 MOC Main Body -  Galvanized Iron with PU coated / Stainless Steel – Satin Finish
Working Area -  Stainless Steel IS 304 Grade Satin Finish
12 Supply Filter HEPA Filter having EU 13 rating with suitable size.
Efficiency 99.99% down to 0.3 Microns.
13 Exhaust Filter (Double Stage) HEPA Filter having EU 13 rating with suitable size.
Efficiency 99.99% down to 0.3 Microns.
14 Pre Filter Aeromech® make, EU 4 rating with suitable size.
Efficiency 90% down to 10 Microns.
15 Noise Level Less than 70 db 'A'.
16 Vibration Level Minimum.
17  Differential Pressure Gauge Magnehelic Gauge - 01 No. (make : Dwyer, USA) with each unit 
(To measure differential pressure across the supply HEPA filter).
 Motor Blower Assembly Statically & Dynamically balanced with suitable rating and size.
18 Supply & Exhaust (Induction motor with centrifugal blower) A Mounting unique spring suspension system to take care of vibration and noise.
19  3 Pins Switch & Socket 15 AMPS - 1 set in each unit.
20 Other Switches On/Off switches for motor blower & CFL lights.
21  Microprocessor Control Airflow display and UV Interlocking and Low airflow Alarm and Supply  & Exhaust filter Fail

Aeromech™ Class II! cabinets are utilized for work with highly infectious microbiological agents and for the conduct of hazardous operations and provides maximum protection for the environment and the worker. It is a gas-tight enclosure with a non-opening view window. Access for passage of materials into the cabinet is through a dunk tank, that is accessible through the cabinet floor, or double-door pass- through box (e.g., an autoclave) that can be decontaminated between uses.

Reversing that process allows materials to safely be removed. Both the supply and the exhaust air of the unit is HEPA filtered. The air that is exhausted from the unit must pass through two HEPA filters, or HEPA-filtration in combination with an air incinerator, before discharge of air. Class Ill BSCs are not discharged through the general laboratory exhaust system. (BMBL). Gloves are attached to the unit, utilizing gas-tight ports. This allows the user to directly manipulate the materials inside the cabinet. Class IIl units may also be joined together to implement a larger capacity containment area.

Aeromech® The Class I biological safety cabinet is an open-front negative pressure cabinet The exhaust air from the cabinet is filtered by a high-efficiency particulate air (HEPA) filter. The Class I biosafety cabinet will provide personnel and environmental protection, but not product protection.