Filter Cassette Holder Kit (required when sampling Back Catalog number: 800143 Manufacturer: SENSIDYNE Availability: 3 weeks Price on request - + Recommended 800159 Tubing, 1/8" ID x 1/16" W, Clear PVC with barbed a Price on request GCU37500PVCMW-2 Cassette, 37mm 2pc 5.0µm, PVC Matched, (50µg), 50/ Price on request 385-0112-01 Sheath Air Purge Flow Filter for Nephelometer Price on request