Filter Cassette Holder Kit (required when sampling Back Catalog number: 800143 Manufacturer: SENSIDYNE Availability: 3 weeks Price on request - + Recommended 297-0012-01 USB Communications Cable for Nephelometer Price on request GF37050T Filter, PTFE with Polypropylene Backing, 0.5µm, 37 Price on request 801863-171-2301 BDX II Starter Kit, 230V Price on request