50 * 50mm HDPE Opaque Back Catalog number: 8644H-50 Manufacturer: Sampling Systems Availability: In the manufacturer's stock Price on request - + Recommended 8700S-06 200mm Sieve. 600micron Price on request 8370H-100S 100mm dia Funnel box of 50. Sterile Price on request 8785H-110S Scraper box of 100. sterile Price on request