... Photometer, Whiteness Meter, Turbidity Meter, Colorimeter, Gloss Meter, Tintometer, Automatic Polarimeter, Auto Melting Point Apparatus, Automatic Refractometer, Abbe Refractometer, PH/DDS/TDS Meter, etc.TDSscan ... series Waterproof Pocket TDS TesterTotal Dissolved Solids (TDS) comprise inorganic salts and small amounts ...