50 * 50mm PTFE (Teflon) Back Catalog number: 8644T-50 Manufacturer: Sampling Systems Availability: In the manufacturer's stock Price on request - + Recommended 8600M-25 Sample splitter. 25mm Price on request 8700B-05 200mm Sieve. 700micron Price on request 8370B-100S 100mm dia Funnel box of 50 Sterile Price on request