Sulfamethizole, 100 µg/ml, Methanol, 1ml

2,2',3,4,4',5,5'-Heptachloro[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane

EPA Method 8260 - Surrogate Standard

1,2,4-Trichlorobenzene, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 120-82-1