Mass-Labelled PCB Solution/Mixture , 1.2ml, nonane

(±)-Nicotine-d7 (N-methyl-d3; pyridine-d4),1000 µg/mL,acetonitrile,1mL,

Atrazine-2-hydroxy, 100 µg/ml, Methanol, 1ml

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)