50 * 50mm PTFE (Teflon) Back Catalog number: 8644T-50 Manufacturer: Sampling Systems Availability: In the manufacturer's stock Price on request - + Recommended A135-100C Cover for PTFE Beaker Price on request 8700B-03 200mm Sieve. 1mm Price on request 8785H-75 Scraper box of 100 Price on request