Ltd carries out all Class III Microbiological Safety Cabinet maintenance in accordance with the requirements of BS EN12469 2000 or by company in house test codes.

On a normal service visit or commissioning tests the following checks are made.

We recommend that each unit is checked once every 6 months for:

1.	Operation of all services and system controls.
2.	Filter and seal integrity tests.
3.	Inspection of seals for corrosion and damage.
4.	Inspection of main body and duct for corrosion and damage.
5.	Check alarm and airflow gauge for correct operation and calibration.
6.	Check anti-blow back device for correct operation.
7.	Pre filter changed if necessary.

Air inflow and pressure measurement - In accordance with BS5726:1992 Part 3 Appendix A or by company in house codes.
Using - Airflow Developments AV2 Anemometer.

Filter and seal integrity tests - In accordance with Appendix B of BS5726: Part 1: 1 992. Results should comply with Section 8.5 of BS5726: Part 1: 1992. Cabinets should have each filter tested individually.
Using - Taylor Smoke generator and ATI forward light scattering photometer

Give full test certificate. - All test equipment where necessary is always calibrated and carries a full calibration test certificate. Any of these certificates are available on special request.