Pyrazophos, 1000µg/ml in MeOH, 1ml

Pentachloronitrobenzene-13C6,100 µg/mL,n-nonane,1mL,

1,2,3,4,6,7-Hexachlorodibenzo-p-dioxin, 1.2ml x 50ug/ml, nonane

sec-Butanol