Benzo(a)pyrene, 10 ng/µl, 10ml

2-Methyl-2-propanethiol

Hexavalent Chromium (Cr+6), 10mg/mL in H2O, 500ml

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