1-(3-Chloro-4-methylphenyl)-3-methylurea, 100mg

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)

Ethanol standard in serum,0.8g/L,serum, 3mL

1-(4-Isopropylphenyl)-3-methylurea, 100mg