A 23 compnent standard of the following at 100ug/mL each(except as noted) in pesticide grade acetone: Acephate(200ug/mL), alachlor, aldicarb, aldicarb sulfoxide, aldrin, aspon, atrazine, azinphos-ethyl, azinphos-methyl (200ug/mL), benfluralin, alpha-BHC, beta-BHC, bromophos-methyl, bromophos-ethyl, bromopropylate, butylate, captan, carbofenothion, carbofuran, casoran, chlorbenside, alpha-chlordane, gamma-chlordane, chlorfenson, chlorfenvinphos, cholrmephos, chlorobenzilate, disulfoton sulfone. 1.5mL per ampule.