PAH-Mix 24 deuterated, 10 ng/µl, 1ml

Monoethyl phthalate-3,4,5,6-d4, 100µg/ml in MeOH, 1ml

Diisodecyl phthalate [mix of isomers], 10mg/ml in MeOH, 1ml

Isobutyl alcohol, 1g