Bentazone, 10.0 µg/ml, Acetonitrile, 10ml

Sodium arsenate dibasic heptahydrate (As)

N-[3-(Dimethylamino)propan-1-yl]perfluoro-1-butanesulfonamide, 50µg/ml in MeOH, 1,2ml

4-n-Nonylphenol-di-ethoxylate, 100 µg/ml, Acetoni