Iodofenphos, 100 µg/ml, Acetonitrile, 1ml

EN 15721 Internal Standard Stock Solution, procedure A 1382.2 Ethanol 8mL Pentanol-3 80µL (Gives a concentration of approx. 8mg/mL)

Clofibric-d4 acid, 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 1184991-14-7

Perfluoro-n-[1,2,3,4-13C4]butanoic acid, 50µg/ml in MeOH, 1,2ml