WS pH @ 25°C

2,4-Dibromobiphenyl, 1.2ml x 50ug/ml, nonane

4-tert-Octylphenol, 100 µg/ml, Acetone, 1ml

Bentazon-d7 (isopropyl-d7),100 µg/mL,acetonitrile,1mL,