(+/-)-3-(4-Methylbenzylidene-d4)camphor, 100µg/ml

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)

2,2',3,4,4',6'-Hexachlorobiphenyl ,100 µg/mL,isooctane,1mL,

Ethanol standard in water,0.5g/L,water, 3mL