n-Heptyl 4-hydroxybenzoate, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1085-12-7

2,8-Dichlorodibenzo-p-dioxin, 1.2ml x 50ug/ml, nonane

GC-IRMS Standards (C25 (?13C: -28.21); C30 (?13C: -28.60); C36 (?13C: -26.15)), 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-5, Cas.no.

17 alpha(H),21ß(H)-30-Norhopane, 50µg/mL in Isooctane, 1ml