Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended SC-1 Tedlar Bag (0.5L) Price on request 780-0015-03-R Calibrator cable (TSI)-4146 and GoCal, for automat Price on request GCU37500PVCMW Cassette, 37mm 3pc 5.0µm, PVC Matched, (50µg), 50/ Price on request