50 * 50mm HDPE Opaque Back Catalog number: 8644H-50 Manufacturer: Sampling Systems Availability: In the manufacturer's stock Price on request - + Recommended 8644H-100 100 * 100mm HDPE Opaque Price on request 8700S-07 200mm Sieve. 500micron Price on request A135-5 PTFE Beaker Price on request