Filter, 47mm, 0.4µm, Polycarbonate, Plain White, 1 Back Catalog number: GFPC447 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 297-0012-01 USB Communications Cable for Nephelometer Price on request C-BIO02-01 BioVOC-2 Breath Sampler, pk 1 Price on request GFPC225 Filter, 25mm, 0.2µm, Polycarbonate, Plain White, 1 Price on request