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Blue litmus paper is a fast easy way to test for acidity; simply dip a strip into the solution in question and if it is acidic, it will turn red immediately.
Blue litmus paper-acid test; 100 strips vial
PRICE BREAKS - The more you buy, the more you save.Quantity1+2+ 3+ 10+ 100+ Price for each$2.60USD$2.50USD$2.35USD$2.20USD$1.95USDYour savings- 3.85%9.62%15.38%25%
The pH litmus indicator chemical, 7-hydroxyphenoxazone, seen the image below, is extracted from lichens. It can be added to water or filter paper to make test strips. It changes from blue to red in the presence of acids such as lemon or orange juice, vinegar, urine or milk.
The image shows the blue litmus papers as they are available in both vial & pad; the strips are identical and turn from blue to red when dipped in an acid solution.
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