50 * 50mm HDPE Opaque Back Catalog number: 8644H-50 Manufacturer: Sampling Systems Availability: In the manufacturer's stock Price on request - + Recommended A135-5000 PTFE Beaker Price on request 8700B-16 200mm Sieve. 75micron Price on request 8700S-19 200mm Sieve.25micron Price on request