Mephosfolan, 100 µg/ml, Cyclohexane, 5ml

17a-Ethinylestradiol, 100 µg/ml, Methanol, 1ml

C27 Ring-C Monoaromatic sterane (5ß(H),10ß(CH3)/5?(H),10ß(CH3)),10 µg/mL,isooctane,1mL,

Sulfur, 500µg/g (0.0500 wt%) in Diesel Fuel, 100ml