Powder reagents for iron (25 tests). Contains: 25 sachets

Aloeemodin, >98%, 20mg

Sulfur Calibration Mixtures: Di-n-butyl sulfide in Light 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)

1-Ethylindole,neat,neat,10mg,