Tiocarbazil, 100 µg/ml, Acetonitrile, 5ml

1D,1D,2H,2H-1-Hydroxyperfluorooctane,50 µg/mL,MeOH,1mL,

2,4,6-Tribromophenol, 10 µg/ml, Methanol, 10ml

Ascorbic acid [Vitamin C]