Containment Level (CL) 3 laboratories offer two physical levels of containment from harmful pathogens. Although routine fumigation of CL3 laboratories is not mandatory within the UK government’s Advisory Committee on Dangerous Pathogens (ACDP) guidance, there is a requirement to be able to safely fumigate a facility in the event of a spillage or leakage which could lead to widespread contamination.

Fumigation using Formaldehyde is still known to be highly reliable and effective for room decontamination due to its broad antimicrobial efficacy and log reduction. Crowthorne offer both hydrogen peroxide and formaldehyde fumigation dependant on your requirements and preference. To discuss your individual requirements, get in touch.

When to Fumigate?

Fumigation may be required under any of the following circumstances:

  • To ensure a laboratory is decontaminated before the annual inspection and verification
  • Following a spillage or leakage
  • To prevent cross and background contamination
  • To create a sterile environment
  • During the decommissioning of a CL3 facility
  • As part of a fumigation efficacy study.

Fumigation Validation

It is important to validate the fumigation using Biological Indicators (BIs) to verify effectiveness. There are various types of BIs available depending on the type of fumigant used.

Sealability of CL3 and CL4 Facilities

All laboratories which require fumigation will need to provide evidence to the Health and Safety Executive (HSE) that sealability tests using smoke pencils have been undertaken and any identified leak paths adequately rectified.

Emergency CL3 Fumigation Scheme

Advisory Committee on Dangerous Pathogens (ACDP) guidance stipulates the requirement to be able to safely fumigate a facility in the event of a spillage or leakage which could lead to widespread contamination (routine fumigation is not stipulated).

In addition, a documented fumigation protocol is required for every CL3 laboratory, which should include a fumigation efficacy study which is validated using biological indicators, to ensure the effectiveness of an emergency fumigation.

In the case of a spillage in your CL3 laboratory Crowthorne offer an emergency fumigation scheme. Our highly trained engineers will attend your site within 24 hours to fumigate the potentially contaminated facility, dramatically reducing any downtime.

To discuss your CL3 fumigation requirements today, please contact us today

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