Procedure: Small amount of sample is collected in a test tube and the corresponding reagent is added to the sample. Color of the sample changes and the same is compared with the respective color chart. The reading of the matched color on the color chart is the concentration of the respective parameter in the water.

The sample is titrated with Silver Nitrate Standard Solution in the presence of Potassium Chromate. The Silver Nitrate reacts with Chloride present to produce insoluble White Silver Chloride. After all the Chloride has been precipitated the Silver ions react with the excess Chromate present to form a red brown Silver Chromate precipitate, marking the end point of titration.
Range:0.01, 0.02, 0.04,0.06,0.08, 0.1,0.5,1.0 & 2.0 mg/L
No of Tests:100 Tests
Catalog No:OR-NO2-01