Phenkapton, 100 µg/ml, Acetonitrile, 1ml

4-Nitrophenol, 10.0 µg/ml, Acetonitrile, 10ml

4,5-Dichloro-2-(2,4-dichlorophenoxy)phenol (4-Chlorotriclosan), 1.2ml x 50ug/ml, nonane

Nitrite (NO2-) as N