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Fume Cupboards

Crowthorne Hi-Tec Services are not manufacturers or suppliers of fume cupboards or containment equipment and therefore provide a completely unbiased report on the performance achieved.

Fume Cupboards / Re-Circulating fume Cupboards

The COSHH Regulations impose a statutory duty to carry out full commissioning and on-going maintenance testing to demonstrate safe performance. These tests include testing of airflows and alarm systems, airflow visualization and containment testing.

Crowthorne Hi-Tec Services offer containment testing using sulphur hexafluoride tracer gas to all UK and international standards / methods. This includes type testing in the factory, commissioning or on site maintenance tests where toxic materials are used and the operators require the level of protection provided to be established. Re-circulating fume cupboards rely on filter efficiency to provide operator protection, this should be confirmed by carrying out filter testing in accordance with BS7989.

Scope of Work

Routine Service Checks

Check airflow velocities [vane / thermal anemometer] Check light levels Check noise levels Check operation of all service controls Check operation of air flow indicators Check operation of speed control

Inspect pre-filter [replace as required] Check general condition of fan Check operation of contactors & relays Carry out containment test Carry out air flow visualization HEPA / Carbon filter efficiency test Check sash mechanism

Clean interior surfaces Check baffle settings Check air make up balance Issue a test certificate for all results

The above are generic specifications and can be tailored to suit customer requirements.

Occupational Hygiene

Crowthorne Hi-Tec Services provides a full occupational hygiene service including COSHH assessments and measurement of exposure levels. Full noise surveys are carried out to allow assessment of operator exposure levels in accordance with Noise at Work Regulations.

Comprehensive assessment of local exhaust ventilation systems can be carried out including measurement of capture efficiency and the preparation of isometric system drawings.