PCB Congeners & Hexachlorobenzene Mix #4 Back Catalog number: 95453 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended ME 20030 Aqueous Ethanol Standard (0.3g/l), 10 x 1,2ml Price on request 70931 2,4-DB methyl ester Price on request 675034 Sodium dodecylbenzenesulfonate (hard type) (ABS 10 Price on request