Filter, 37mm, 0.4µm, Polycarbonate, Plain White, 1 Back Catalog number: GFPC4537 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 611-0501-01 Flow Monitoring Software, Gilibrator-2 Price on request C-BIO02-100 BioVOC-2 Breath Sampler, pk 100 Price on request 910-1601-NO Gilian 12 Starter Kit, No Cord Price on request