Figures 5.1 and 5.2 show an ultraviolet spectrogram and a calibration graph, respectively, which demonstrates that the optical brightener Uvitex OB can be estimated in amounts down to 3 ppm in these ...

Petroleum base stocks are common diluents or bulking additive in paints and pesticides. Extractant / Ion Exchange Resin Extractants and ion exchange resins are used to remove metal ions from water.