text: K-7025 Nitrite Titrets Kit was designed to obtain Nitrite levels from 250-2500 ppm.
  The K-7025 Nitrite Kit was designed to accurately measure the levels of Nitrite in water from 250-2500 ppm. K-7025 uses the Ceric Sulfate Titrimetric Method. Ceric sulfate is the titrant and ferroin is the endpoint indicator. The method is free from glycol interference in samples that contain up to 75% glycol, making it particularly applicable to systems that contain nitrite corrosion inhibitors. Results are expressed as ppm (mg/L) NaNO2.
  1. Fill the sample cup to the 25 mL mark with the sample to be tested. 2. Snap the tip of the ampoule at the black snap ring.
  3. Lift the control bar and insert the Titret assembly into the Titrettor. 4. Hold the Titrettor with the sample pipe in the sample. Press the control bar firmly, but briefly, to pull in a small amount of sample. The contents will turn green.
  5. Press the control bar again to draw another small amount of sample into the ampoule. 6. Rock the entire assembly to mix the contents of the ampoule. Watch for a color change from green through blue to orange.
  7. Repeat steps 5 and 6 until a permanent color change occurs. 8. When the color of the liquid in the ampoule changes to orange, remove the ampoule from the Titrettor. Hold the ampoule tip pointed upward and read the scale opposite the liquid level. Results are expressed in ppm (mg/Liter) sodium hydroxide (NaOH).