50 * 50mm Borosilicate glass (pyrex) Back Catalog number: 8644AB-50 Manufacturer: Sampling Systems Availability: In the manufacturer's stock Price on request - + Recommended 8700S-11 200mm Sieve. 180micron Price on request 8700B-01 200mm Sieve. 4mm Price on request 8785H-75S Scraper box of 100. Sterile Price on request