Parabens Mix, 1000µg/ml in MeOH, 1ml

1,2,3,7,8-Pentachloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene

Sodium perfluoro-1-hexanesulfonate, 1.2ml x 50ug/ml, methanol

tert-Butyl methyl ether, 10 µg/ml, Methanol, 10m