Casella PUF Respirable Filters for IOM Heads

Casella PUF foam inserts for 25mm IOM Total Inhalable Dust filter colleaction heads.

Packs of 10 inserts.

Used for Respirable Dust exposure measurement using IOM TID head and following HSE MDHS14-4

https://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs14-4.pdf