Heptachlor, 100 µg/ml, Methanol, 1ml

2,2',5,5'-Tetrachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

Calibration Mixtures: Di-n-butyl sulfide in Isooctane Unit: 1x10mL screw-capped bottle Isooctane µgS/g (ppm) Wt.% S-4050-0-10IO 0 Blank 0 S-4050-1-10IO 1 0.0001 Etc. S-4050-10Kit Kit of above solutions

1,2,3,4,6,8-Hexachlorodibenzo-p-dioxin, 1.2ml x 50ug/ml, nonane