Cabbage pH Indicator
The method of measuring acid and alkali in vegetables
There is a need to measure acid and alkali in the world, and the method can be obtained by taking vegetables and vegetables as a guide. Choose fresh green cabbage, cut it into finely chopped pieces, put it in a kettle, add water to boil. The fire should be slow, and when the color of the water gradually changes, such as dyeing emerald, stop.
Drain its juice and fill it in a purifier. This juice changes color when it encounters acid, or red or Fei, and changes color when it encounters alkali, or green or blue. If you want to know the acid and alkali of a thing, take its liquid and drop it on the thing to be tested. Looking at its color change, you will know the nature of acid and alkali. Acid, the color is red like red sand; alkali, the color is
It is simple and easy to use the juice of vegetables and vegetables as a tool for measuring acid and alkali. In ordinary people, it is a wonderful way to test the properties of objects without the need for a multiplier.
