50 * 50mm Nylon (Polyamide) 6/6, FDA Grade, Back Catalog number: 8644N-50 Manufacturer: Sampling Systems Availability: In the manufacturer's stock Price on request - + Recommended 8644T-50 50 * 50mm PTFE (Teflon) Price on request 8500C-01 Superior case with cut out Price on request 8700S-09 200mm Sieve. 300micron Price on request