(+/-)-Normetanephrine-a,β,β-d3 HCl, 100µg/ml in Me

Potassium Nitrate as N

2,4-Dibromo[13C6]phenol, 1.2ml x 100ug/ml, toluene

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)