D3-Propyzamide, 100 µg/ml, Acetonitrile, 1ml

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

2,2',3,4,5-Pentachlorobiphenyl

Sulfur, 5µg/g (0.0005 wt%) in Diesel Fuel, 100ml