Bromomethane, 200µg/ml in MeOH, 1ml

2,3,3’,4,4’,5’-Hexachlorobiphenyl (157)

3,3',4,4',5,5'-Hexachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

Univolt N-61 Type II Transformer Oil