Bisphenol B, 100 µg/ml, Acetonitrile, 1ml

2,4-Dibromo[13C6]phenol, 1.2ml x 100ug/ml, toluene

Mexacarbate, 100 µg/ml, Acetonitrile, 5ml

O,O-Dimethylthiophosphate, sodium salt, 1000µg/ml in MeOH, 1ml