Naphthalene, 10µg/ml in Acetonitrile, 10ml

Methyl-4-hydroxybenzoate, 1000µg/ml in MeOH, 1ml

PCB No. 3, 100µg/ml in Isooctane, 1ml

Diisononyl cyclohexane-1,2-dicarboxylate ,1000 µg/mL,acetonitrile,1mL,