Nephelometer O-Ring, Replacement Back Catalog number: 385-0115-01 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-0913-01-R Outlet Fitting, Bag Fill Adapter Price on request 811-0934-01-R Belt Clip Replacement Kit for GilAir-Plus Price on request 811-9936-01 Tubing Adapter, 1/4" to 3/8 " ID, Plastic, for Gil Price on request