50 * 50mm PS Back Catalog number: 8644PS-50 Manufacturer: Sampling Systems Availability: In the manufacturer's stock Price on request - + Recommended 8644T-50 50 * 50mm PTFE (Teflon) Price on request 8509A-1200 Aluminium Case 1250 * 225 * 75 Price on request 8700B-05 200mm Sieve. 700micron Price on request