Biphenyl, 100 µg/ml, Cyclohexane, 1ml Back Catalog number: 680678 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended EPA-1668LCS Labelled Compound Stock Solution, 1.2ml, nonane Price on request 679810 Sulfadoxine, 100 µg/ml, Methanol, 1ml Price on request 680841 Clofibrate, 100 µg/ml, Acetonitrile, 1ml Price on request