Turbidity Standard (1.0 NTU) Back Catalog number: 59290 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended BDE-156 2,3,3',4,4',5-Hexabromodiphenyl ether, 1.2ml x 50ug/ml, nonane Price on request PCB-LCS-A1 Mass-Labelled PCB Solution/Mixture , 1.2ml, nonane Price on request 71240 2,3-Benzofluorene, 1000µg/ml in methylene chloride, 1ml Price on request