Cover for PTFE Beaker Back Catalog number: A135-250C Manufacturer: Sampling Systems Availability: In the manufacturer's stock Price on request - + Recommended 8700B-04 200mm Sieve. 850micron Price on request A356-275 Tablet CountingTriangle. 316L ss. 275mm Price on request 8700S-19 200mm Sieve.25micron Price on request