Nephelometer O-Ring, Replacement Back Catalog number: 385-0115-01 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended TE-26 Teflon Bag, Septum Valve (1.2L) Price on request 800252 Single Variable Flow Starter Kit (Includes 6x70mm, Price on request 800885-171-2305 GilAir-5 RC Pump, 5-Pack with Universal 5-Unit Cha Price on request