Litmus | Paper

Litmus paper only reacts in the presence of water. To test dry gases (like HClcap H cap C l NH3cap N cap H sub 3

Primarily used to test for bases. It remains red in acidic or neutral solutions and turns blue in alkaline ones.

Primarily used to test for acids. It remains blue in basic or neutral solutions and turns red in acidic ones. litmus paper

Litmus paper is generally intended for single use and should be disposed of according to lab protocol after one test. Applications and Limitations

Use clean forceps or a glass rod to apply the sample, or dip one end of the paper strip into the liquid. Litmus paper only reacts in the presence of water

There are three main variations used in laboratories and educational settings:

Generally do not change the color of red or blue litmus paper, though dedicated purple litmus paper exists for this purpose. Types of Litmus Paper Primarily used to test for acids

The primary purpose of litmus paper is to provide a quick, qualitative assessment of a substance's nature. Unlike pH strips or digital meters, it does not provide an exact numerical pH value; instead, it indicates a range where a color change occurs, typically between pH 4.5 and 8.3. Turn blue litmus paper red . Bases: Turn red litmus paper blue .