50 * 50mm PS Back Catalog number: 8644PS-50 Manufacturer: Sampling Systems Availability: In the manufacturer's stock Price on request - + Recommended 8700B-14 200mm Sieve. 106micron Price on request 8700S-12 200mm Sieve. 150micron Price on request 8700S-18 200mm Sieve. 32micron Price on request