Sulfapyridine, 100 µg/ml, Methanol, 1ml

Formaldehyd-DNPH, 100 µg/ml, Acetonitrile, 5ml

Fenchlorazol-ethyl, 10 µg/ml, Acetonitrile, 10ml

Atrazine-desisopropyl D5 (ethylamino D5), 100µg/ml in Acetone, 1ml