2-Ethyltoluene, 200 µg/ml, Methanol, 1ml

EPA Method 552 Halogenated Acetic Mixture, 100µg/mL in MTBE, 1ml

Amlodipine, 100µg/mL in Acetonitrile. 1ml

Diuron, 100µg/mL in Acetonitrile, 1ml