The HANNA test kit measures salinity using a fast and efficient titrimetric method. The test requires only a few simple and safe steps to obtain results. The salinity level in g/kg is determined by a mercuric nitrate titration method. The pH is lowered to approximately 3 by addition of nitric acid. Mercuric ions react with chloride ions to form mercuric chloride. When excessive mercuric ions are present, it complexes with diphenylcarbazone to form a purple solution. The color change from yellow to violet indicates the endpoint.
HI 3835 test kit comes with 15 mL diphenyl-carbazone indicator, 30 mL nitric acid solution, 120 mL titrant solution, plastic vial and 1 mL calibrated syringe with tip.
|Smallest Increment||0.4 g/kg|
|Chemical Method||Mercuric nitrate|
|Number of Tests||approx 110|