2,4,4'-Trichlorodiphenyl ether, 1.2ml x 50ug/ml, nonane

EPA Method 8141/1657 Surrogate Standard

Tri-n-butyltin chloride, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-5, Cas.no. 1461-22-9

2 alpha,17ß(H),21ß(H)-2-Methylhopane, neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 138128-29-7