Safety Cabinets
Crowthorne Hi-Tec Services are not manufacturers or suppliers of microbiological safety cabinets or clean air equipment and therefore provide a completely unbiased report on the performance achieved.
Microbiological Safety Cabinets
There is a statutory requirement to carry out testing and validation of microbiological safety cabinets. Performance tests are carried out to BS EN12469 and include HEPA filter integrity, airflow velocity and visualization tests, operation of airflow indicators & alarms and KI-Discus(aperture protection factor) tests. KI-Discus test can also be carried out to determine product protection and cross contamination levels. Installation of the cabinet is assessed against the requirements of BS5726 : 2005. Cabinets located in ACDP containment level 3 laboratories should have the KI-Discus test carried out six monthly.
In order to comply with health & safety regulations safety cabinets used for known or potential human pathogens must be rendered safe prior to service. Crowthorne Hi-Tec Services offer a full fumigation service including re-circulating cabinets where it is not possible to safely discharge the fumigant to atmosphere.
Laminar Flow Equipment
Clean air equipment can only be relied upon for product protection once the airflows have been correctly set, and a HEPA filter integrity test is performed to the specified standard. Air cleanliness within the device is shown by carrying out particle counts and determining the cleanliness level as defined in BS EN 14644. Since HEPA filters load with particulate during operation periodic servicing is essential to ensure performance continues to meet specification.
Tests are only reliable when carried out using the correct instruments which have calibration traceable to National Standards. All of our test equipment meets the latest standards and is calibrated by an external qualified calibration house or equipment manufacturer.
Scope of Work
Routine Service Checks
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Inspect pre-filter [replace as required]
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Check operation of all switches
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Check operation of warning systems
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Check operation of speed control
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Check general condition of fan
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Check service outlets
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Check operation of contactors & relays |
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Check operation of air flow indicators
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Check operation of pressure gauges
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Check operation of vaporizer
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Check airflow velocities
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Check lighting tubes
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Check light levels
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Check noise levels |
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Check HEPA filter In-Situ filter leak test
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Check operator protection [KI-Discus]
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Check product protection [KI-Discus]
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Issue test certificates for each cabinet
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Full Fumigation Service including non ducted cabinets | The above are generic specifications and can be tailored to suit customer requirements.
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