trans-Heptachlor epoxide, 50mg

Sulfur Calibration Mixtures: Di-n-butyl sulfide in Heavy White Oil (less than 20mg/kg S) Unit : 10mL screw-capped bottle Light White Mineral Oil Heavy White Mineral Oil (20 cSt at 40°C) (70 cSt at 40°C)

n-Tricosane, ?13C: -26.71, 150ug/ml, Solvent-cyclohexane, Unit 1mL, # of units-10, Cas.no. 638-67-5

C21 Tricyclic terpane X, neat, Solvent-neat, Unit ca. 5µg, # of units-1, Cas.no.