Turbidity Standard (400 NTU) Back Catalog number: 54122 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 66074 2,4,4',5-Tetrachlorobiphenyl (74) Price on request MDF-1234678 1,2,3,4,6,7,8-Heptachloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene Price on request 51134 GRO Standard C6-C10, 2000µg/ml in MetChloride, 1ml Price on request