4-Bromoaniline, 100 µg/ml, Methanol, 5ml

Sulfapyridine, certified, 0.25g

Chlormequat-1,1,2,2-d4 chloride, 1000µg/ml in MeOH, 1ml

Silver (Ag), 1000µg/ml in 2%-HNO3/Water, 100ml