50 * 50mm Borosilicate glass (pyrex) Back Catalog number: 8644AB-50 Manufacturer: Sampling Systems Availability: In the manufacturer's stock Price on request - + Recommended 8700S-16 200mm Sieve. 75micron Price on request 8700B-02 200mm Sieve. 2mm Price on request 8600M-30 Sample splitter. 30mm Price on request