50 * 50mm PVC Back Catalog number: 8644PVC-50 Manufacturer: Sampling Systems Availability: In the manufacturer's stock Price on request - + Recommended 8700B-04 200mm Sieve. 850micron Price on request 8644T-50 50 * 50mm PTFE (Teflon) Price on request 8700B-02 200mm Sieve. 2mm Price on request