4-Nonylphenol (techn.), 100µg/ml in MeOH, 5ml

3-Chloro-1,2-propandiol-2-monostearate

1,2,4,7,8-Pentachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

Acetochlor-d11 (2-ethyl-6-methylphenyl-d11)