All Environmental Express 25mm Air Monitoring Cassettes are numbered and bar-coded and come with a Certificate of Quality. Asbestos TEM Cassettes are made of conductive polypropylene. They are supplied with 0.45µm MCE filters. All cassettes are sealed with the LOK-Seal™ band.…

25mm Cassettes Asbestos cassettes are made of conductive polypropylene. They are supplied with 0.8µm mixed cellulose ester filters for PCM or 0.45µm filters of MCE with 5µm backup for TEM. All cassettes are sealed with the LOK-SealTm band. Both PCM and TEM cassettes include…