Information alert

The guidance on this page relates to Mid Mersey division staff who transferred from North West Boroughs Healthcare on 1 June 2021. 

FFP3 masks rely on a good seal against the face to work effectively. This is so that when you breathe air in, it is drawn into the filter material, where the air is cleaned. If there are any gaps around the edges of the mask, 'dirty' air will pass through these gaps and into your lungs.

All staff who may be required to carry out aerosol generating procedures (AGPs) in their role need to be fit tested for FFP3 masks. This includes: 

  • All clinical inpatient staff

  • All community staff who standardly conduct AGPs as part of their role

Community staff who don't carry out AGPs do not need to be fit tested. If you are unsure if you need to be tested, please email

New FFP3 mask stock

Due to a change in stock of FFP3 masks, all staff who have previously been fit tested (pre-November 2020) are now required to undergo retesting with new stock, which will be in use across the Trust by the new year. Please ensure you have been retested by attending one of the drop-in sessions.

Fit testing dates

The sessions are now running by appointments slots. To book a testing slot, please email and advise which date you would like to attend. An appointment slot will then be confirmed with you.

You MUST be clean shaven on the day of testing and you cannot eat, drink, smoke, vape or chew gum for 30 mins prior to testing (drinking water is permitted).


  • Wednesday 2 June, 19.00-22.30 – Lapwing Room, Hollins Park
  • Friday 4 June, 10.00-16.00 – Lapwing Room, Hollins Park
  • Sunday 6 June, 18.00-22.00 – Lapwing Room, Hollins Park
  • Wednesday 9 June, 10.00-14.00 - Lapwing Room, Hollins Park
  • Tuesday 15 June, 10.00-16.00 – Lapwing Room, Hollins Park
  • Thursday 24 June, 10.00-16.00 – Lapwing Room, Hollins Park



  • Saturday 5 June, 09.00-17.00 – (Room TBC), KRRC
  • Tuesday 8 June, 19.00-22.30 – (Room TBC), KRRC
  • Sunday 13 June, 09.00-15.00 – (Room TBC), KRRC



  • Thursday 3 June, 19.00-22.30 – Lower Consultant Room 1, Brooker Centre
  • Thursday 10 June, 17.00-22.30 – Lower Consultant Room 1, Brooker Centre
  • Friday 11 June, 09.00-13.30 – Lower Consultant Room 1, Brooker Centre

To ensure the FFP3 masks provide the highest protection for individual wearers, staff are reminded to follow the below guidance at all times.

It's very important to put your mask on correctly and perform a fit check every time you wear an FFP3 mask. If an air leak is felt during this check, the FFP3 mask must be refitted and the fit check performed again.

How to perform a fit check for an FFP3 mask:

  • After applying the mask and moulding it to your face, exhale sharply and feel for any air leakage around the mask.

  • If no air leakage is felt, your mask is safe to use.

The correct technique for removal of level 3 personal protective equipment (PPE), including FFP3 masks, can be found in the video below at 3:05.