Demeton-S-methyl, 1000µg/ml in MeOH, 1ml

Ammonia as N

2,2',6-Trichlorobiphenyl (19)

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)