50 * 50mm PTFE (Teflon) Back Catalog number: 8644T-50 Manufacturer: Sampling Systems Availability: In the manufacturer's stock Price on request - + Recommended 8644S6-50S 50 * 50mm Stainless 316 240grit Price on request 8644N-100 100 * 100mm Nylon (Polyamide) 6/6, FDA Grade, Price on request 8700B-08 200mm Sieve. 425micron Price on request