PTFE Funnel Back Catalog number: A105-50 Manufacturer: Sampling Systems Availability: In the manufacturer's stock Price on request - + Recommended 8700S-20 200mm Sieve. 20micron Price on request 8644H-50 50 * 50mm HDPE Opaque Price on request 8700B-07 200mm Sieve. 500micron Price on request