Blue Litmus Test Paper - Pack of 100 Strips for pH Testing | Acid & Alkali Detection for Science Labs, Schools & Home Experiments

Blue Litmus test paper is a foolproof pH test to determine if something is acidic. The Blue Litmus test paper does not come with a color chart as it cannot provide you with a defined pH value. The test strip will turn red if dipped into an acidic solution (pH <7). It will remain unchanged in an alkaline solution. Although there is no color chart, the strip will turn various shades of red, getting darker the more acidic the solution. We have tested the blue litmus with multiple pH buffers. The blue paper is blue at pH 8. At pH 7, the sample is maybe just a little red. The real change to red seems to start with pH 6.5 and lower.

pH indicator papers supplied in rolls are better suited for longterm storage,

pH indicator papers are manufactured by impregnating high-quality filter paper with indicator or mixed-indicator solutions.

These test strips are easy to use by dipping into a solution.

Blue litmus paper is an acid indicator that turns a red-pink color at 4.3 pH and lower.