Frey Scientific Litmus Test Paper - Pack of 12 Vials - 100 Strips per Vial - Neutral
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Frey Scientific Litmus Neutral Test Paper turn red in acids while blue in bases and comes with 100 strips in each vial. Litmus test paper is sold as 12 vials per pack.
- It will change to red in an acidic solution or blue in an alkaline solution
- Exposure to high humidity for a long period of time can also cause changes in the color reaction system
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