Cassette, 37mm 2pc 5.0µm PVC, 50/Box Back Catalog number: GCU37500PVC-2 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-1709-01-R Gilibrator 3, Standard Flow Dry Cell (Flow Range 50 - 5,000 cc/min) Price on request 811-9923-EU-R Single Unit Replacement Power Adapter, USB-Euro Cord Price on request 780-0015-02-R Calibrator cable (Challenger), for automatic cal option Price on request