Nicotinic acid, Stock solution system check EN12260

Dimethachlor oxalamic acid (OA), 10mg

1,2,3,4,6,8-Hexachloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene

Ethylene sulfide, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 420-12-2