50 * 50mm PP Back Catalog number: 8644PP-50 Manufacturer: Sampling Systems Availability: In the manufacturer's stock Price on request - + Recommended 8700B-09 200mm Sieve. 300micron Price on request 8700B-06 200mm Sieve. 600micron Price on request 8700S-11 200mm Sieve. 180micron Price on request