4-Chlorophenol, 100 µg/ml, Methanol, 5ml

sec-Butylbenzene, 1000mg

Pentabromo[13C6]phenol, 1.2ml x 100ug/ml, toluene

2,3,3',4,5,5'-Hexachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane