2-Phenylhydroquinone, 100mg

p-Cresidine

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)

Custom mix AZO standards, each component 0.10mg/ml in methanol: 2783.12 4-Aminodipenyl 1773.12 Benzidine 2763.7 4-Chloro-o-toluidine 1780.0 2-Naphthylamine 2765.6 4-Chloroaniline 2784.7 2,4-Diaminoanisole 2762.13 4,4’-Methylenedianiline 2