Propetamphos, 100 µg/ml, Ethyl acetate, 5ml

Mono-n-butyl phthalate-3,4,5,6-d4, 100µg/ml in MeOH, 1ml

3-Bromo-2,7,8-trichlorodibenzofuran, 1.2ml x 50ug/ml, toluene

4-Chloro-3-nitrotoluene