PBB-No. 1, 10 ng/µl, 10ml

CONOSTAN Standard S-21, 900 ppm, 100g

2,4,4',5-Tetrachlorobiphenyl (74)

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)