MATERIAL OF CONSTRUCTION
The cabinets are fabricated out of thick board duly sun mica clad. Interior surfaces are epoxy painted for its longer life. The work table is made of Heavy gauge S.S. sheet and is fitted with U.V. Germicidal Light, static pressure Manometer, Exhaust System (suitable for 6 feet duck) and Virus Burn out Unit. Side panels are made out of thick transparent plexi glass duly framed.
The unit is fitted with pre-filter and HEPA Filter. Air is drawn through pre-filter and is made to pass through highly effective HEPA (High Efficiency Particular Air) filters having efficiency retaining all air-boarne particles of size 0.3 micron and larger. Using a dynamic balancing machine, the blower and motor assembly is statically and dynamically balanced. Motor of 1/4 H.P. capacity operates with minimum noise level. The working area is illuminated by fluorescent lighting fitted to the unit. The height of the working table provides a comfortable “SIT DOWN” working position for the operator.
In addition to the above futures of a standard Vertical Laminar Flow Bench, the “SCIENTECH” Bio-safe cabinets have arrangements for re-circulating a part of the air thus creating highest level of clean air. The unit is also convertible to the conventional vertical laminar flow bench with downward air flow by lifting the sliding front door upwards. Air is sucked through the pre-filter and the excess air is thrown out from the top. through a HEPA filter of size 1′ x 1′ x 6’’. Supplied with glove ports, gauntlets, HEPA filter, Pre-filter, U.V. light and fluorescent light.
SPECIFICATION
Biological safety cabinet classes (or biosafety cabinet classes) are classified into classes:
Class I :
A Class I cabinet is defined as a ventilated cabinet for personnel and environmental protection. Class I cabinets do not offer product protection from contamination, significantly limiting their applications. they also have a HEPA filter at the exhaust outlet. They may or may not be ducted outside.
Class II :
A Class II cabinet is defined as a ventilated cabinet for personnel, product and environmental protection for microbiological work or sterile pharmacy compounding. It has downward HEPA-filtered laminar airflow (product protection) and HEPA-filtered exhaust air (environmental protection).
They are further classified into different types :
Type A1:
- 70% air recirculated; 30% exhausted
- 75FPM intake;
- may have biologically contaminated positive pressure plenum
Type A2 :
- 70% air recirculated; 30% exhausted
- 100FPM intake;
- biologically contaminated surrounded by negative pressure
Type B1:
- 40% air recirculated; 60% exhausted from cabinet;
- exhaust air pulled through dedicated exhaust duct into facility exhaust system;
- 100FPM intake
- all ducts and plenums are under negative pressure
| Working Size | 2′ x 2′ x 2′ | 3′ x 2′ x 2′ | 4′ x 2′ x 2′ | 5′ x 2′ x 2′ | 6’x2’x2’ | |
| Size of HEPA Filter | 2′ x 2′ x 6” | 3′ x 2′ x 6” | 4′ x 2′ x 6’’ | 5′ x 2′ x 6’’ | 3’x2’x6” | |
| No. of HEPA Filter | 1 | 1 | 1 | 2 | 2 | |
| Illumination | 1 x 20 W | 1 x 20 W | 2 x 40 W | 2 x 40W | 2 x 40 W | |
| Noise Level | Less than 60 dba | |||||
| Filter | HEPA filter 99.999% efficient (ULPA – Optional) | |||||
| Particle retention | 0.3 micron | |||||
| Controller | Microprocessor controller with digital display | |||||
| Optional | · Supplied with complete body pasted in rolled cold steel 304 grade in lieu of sun mica.
· Fitted with electronic controller with air velocity measurement features a power on of the PCB,GLCD showing the controlling of the different parameters & 8 keys to control different parameters . 1. Automatic U.V light age circulating facility 2. Real time clock 3. Air velocity measurement in m/s through special sensor 4. Filter choke indication 5. Timer for U.V light operation 6. Timer for blower operation 7. The menu driven system allow the user to set multiple parameters easily. 8. Password protected menu system 9. Blower timer range 24 hours settable in menu. 10. Alarm indication when timer gets finished. |
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