Chlorpyrifos, 100 µg/ml, Toluene, 1ml

Nitrofen, 10.0 µg/ml, Cyclohexane, 10ml

N,N-Dimethylaniline

Diphenyl isopropylphenyl phosphate, techn. isomer mixture,1000 µg/mL,isooctane,1mL,