Conductance @ 20°C [1,413 µmho/cm]

2,4'-DDT, 10.0 µg/ml, Ethyl acetate, 10ml

1,3-Bis(4-nitrophenyl)urea, 50mg

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)