Holtzknecht Chromoradiometer

Goltskoe chromometer is a device for determining the concentration of hydrogen in water.

The Holtzchnecht method is based on the ability of hydrogen to form acid when boiled with tin salts. When tin salt is added, a precipitate of tin hydroxide precipitates under the influence of the vinegar concentration. This is how the pH of water is determined: - at pH from 5 to 6, a neutral reaction occurs, and then the change in concentration in the hydrogen environment affects the change in the color of the indicator. - At pH more than 1.2;1.4; The color of the indicator changes and indicates the presence of water in an acidic environment, and then the color of the indicator changes again when psh is more than 6 units. The indicator color is redder. When hydrogen is added, the concentration of vinegar with tin salts decreases and a reaction begins to occur, up to an alkali. Somewhere over time, the indicator or the entire contents need to be changed due to a change in color intensity, and the water becomes cloudy in color. It will be necessary to urgently add acid, because the reaction of “oxidation” of tin hydroxide with hydrogen is already underway.