2,2’,4,4’,5,5’-Hexachlorobiphenyl (153)

2,5-Dimethylfuran

POPE (16:0/18:1) ,1000 µg/mL,chloroform,1mL,

Sulfur Calibration Mixtures: Di-n-butyl sulfide in Light 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)