Estradiol 17-Valerate-d12, 2,5mg

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-Furaldehyde (DNPH derivative), 100mg

EPA Method 8250/8250A Cal Check Cmpds Acids