Instran Online Nitrite Concentration Meter
Even at a concentration of 100 ppb, which is often considered the legal limit in drinking water, a significantly high absorbance can be obtained.
After adding the sample to the measurement cell, several reagents are added to adjust the solution conditions (such as pH and the atomic valence of elements). Subsequently, a blank measurement is performed to correct for the effects of temperature and turbidity. Then, the final reagent is added, which reacts with the solution to produce color and is measured at the appropriate wavelength. Thanks to the photometer used, results can be obtained with very high accuracy. This method is based on the reaction in which nitrous acid generated from nitrite ions undergoes a diazotization reaction with sulfanilamide, forming a vivid colored diazo dye.
- Company：サニー・トレーディング
- Price：Other
