Pyracarbolid, 10 µg/ml, Ethyl acetate, 10ml

13C6-Oxyphenbutazone, 10mg

2-Bromo-1,3,7,8-tetrachlorodibenzo-p-dioxin (>95%), 1.2ml x 48ug/ml, toluene

Isofenphos, 100 µg/ml, Toluene, 1ml