D-Isoascorbic acid, 250mg

2,2',3,6-Tetrachlorobiphenyl,100 µg/mL,isooctane,1mL,

Parathion methyl

1,2,3,7,8-Pentachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene