Nephelometer O-Ring, Replacement Back Catalog number: 385-0115-01 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 200904 Latex Tubing, 1/4" ID (18"), Standard/High Flow, G Price on request 910-0903-NO-R GilAir-Plus STP Single Starter Kit, No cord Price on request 800143 Filter Cassette Holder Kit (required when sampling Price on request