First make a paste of turmeric powder
now apply the paste on a butter paper and let it dry
now its ready and can be used for making secret messages.
Turmeric root is cleaned, boiled, and dried in the oven before being powdered. This pulverized root can then be dissolved in either water or alcohol.
Sodium bicarbonate ( baking soda )
Perform an extraction on 1/4 teaspoon of ground turmeric using 1/4 cup rubbing alcohol.Filter the mixture through a coffee filter, fitted to a sieve. save the effluent.use as effluent, or saturate thin paper strips and use like litmus paper.Turmeric will indicate an acid, by turning yellow.It will indicate a base by turning red.
Universal pH paper is a type of paper used to find the pH level of a solution and is an indicator.
A box of pH paper has printed the colors and the pH values.
by pH Paper ( Litmas Paper) as per PH it take colour.
Universal indicator or litmus paper are the most common methods. You can get pH paper...the color of the paper correlates to certain pH's. pH paper is more accurate than litmus paper.
pH papers are used to find pH of solutions, not litmus paper.
Litmus paper
This is a pH paper.
color
color
That depends on the pH.