50 * 50mm PTFE (Teflon) Back Catalog number: 8644T-50 Manufacturer: Sampling Systems Availability: In the manufacturer's stock Price on request - + Recommended 8700B-09 200mm Sieve. 300micron Price on request 8785H-110 Scraper box of 100 Price on request A105-30 PTFE Funnel Price on request