Thiometon-sulfone, 100 µg/ml, Cyclohexane, 1ml

1,4-Difluorobenzene

Octachloronaphthalene, 1.2ml x 50ug/ml, nonane

EN 15721 Internal Standard Stock Solution, procedure B 1382.2 Ethanol 16mL 8919.5 4-Methyl-2-pentanol 160µL Gives a concentration of approx. 8mg/mL