Cassette, 37mm, 2 pc, 0.8µm Polycarbonate, 50/Box Back Catalog number: GC728PC Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9929-01 Inhalable Dust Sampler, GSP-3.5 Conical Style Price on request 811-0012-01 Gilian 800i/5000/10i/12 Replacement filter, pkg 10 Price on request 811-1710-01-R Gilibrator 3, High Flow Dry Cell (Flow Range 1 - 30LPM) Price on request