Nephelometer O-Ring, Replacement Back Catalog number: 385-0115-01 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended GF25450 Filter, MCE, 0.45µm, 25mm, TEM 100/Pack Price on request 615-0910-01 Cd with software, manuals and USB drivers Price on request GF25500 Filter, MCE, 5.0µm, 25mm, 100/Pack Price on request