EPA specified PM2.5 reference method 46.2mm PTFE particulate sampling filters.
EPA specified PM2.5 reference method 46.2mm diameter PTFE particulate sampling filters. Partial-pack quantities of PM2.5 particulate sampling filters that fit into 47mm filter cassettes for air sample collection. We aren’t really a lab supply reseller, but we offer these as a convenience for users who need a few PM2.5 filters without the expense or lead time of ordering a full case. These are less expensive but high quality GVS brand PTFE membrane filters with serialized PP support rings. Made in Italy. Note: PTFE sample filter prices fluctuate frequently. Contact us for current pricing.