50 * 50mm PS Back Catalog number: 8644PS-50 Manufacturer: Sampling Systems Availability: In the manufacturer's stock Price on request - + Recommended 8700B-10 200mm Sieve. 250micron Price on request A135-100C Cover for PTFE Beaker Price on request 8644T-100 100 * 100mm PTFE (Teflon) Price on request