Phone: (519) 746-4761

Canadian Address:

169 Lexington Court, Unit I

Waterloo, ON, N2J 4R9


US Address:

Niagara Falls, NY 14305

Canadian/International ship from Waterloo; US orders from Buffalo, NY.

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Blue Litmus Paper 100 Strips/Vial

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; only $1.75.

Use pH4-5-10 test strips if you measuring weak acids or bases since litmus paper is not very accurate betwee pH5.5-8.5.

SKU: 33810-BV
Blue litmus paper-acid test; 100 strips vial

$1.75USD or lower Each

Save More When You Buy More!
Quantity1+10+ 100+ 
Price for each$1.75USD$1.60USD$1.45USD
Your savings- 8.57%17.14%
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What Turns Blue Litmus Paper Red?

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.

Litmus Indicator Chemical

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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