L-(+)-Ascorbic acid, certified, 0.25g

1-Chloro-3-nitrobenzene, 1000µg/ml in MeOH, 1ml

4-sec-Butyl-2,6-di-tert-butylphenol,neat,neat,100mg,

Prosulfuron, 10.0 µg/ml, Acetonitrile, 10ml