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We had this raised in 2022 – our resolution with the UKAS assessors was to use a wet wipe to clean the brush.
I don’t still don’t see how that actually decontaminates any fibres from your paint brush.
We also toyed (very briefly) with the idea of having a single use brush – but we immediately abandoned that due to excess waste and cost.
The other thing we discussed at that time was that any fibre transfer would be deemed as trace amounts of asbestos, should you for whatever reason send your paint brush off to a bulk ID analyst for testing. If it was trace amounts then “the potential to spread asbestos” via the paint brush perhaps wouldn’t apply due to it being trace? We didn’t send our paint brush for testing, or the paint in the pot to find out.
The paint brush would be wet anyway with paint – so there should be minimal risk of any airborne release when you take the brush in and out of the paint. Potentially, if a fibre(s) were transferred from one material to another via the brush, it would be in the wet paint and sealed when transferred. So it is likely to be miniscule amounts of asbestos that seems to be the issue.
Also interested in everyone else’s views.