Cassette, 37mm 3pc w/ Type A/E Glass Fiber, 50/Box Back Catalog number: GCU37AE Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 563-0609-06-R 3/8" ID PVC Tubing, per foot Price on request 385-0112-01 Sheath Air Purge Flow Filter for Nephelometer Price on request 811-9913-01 Challenger O-Ring Replacement Kit Price on request