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Litmus papers, 5m rolls, width 10 mm, blue pH 8 - 5
Litmus paper is one of the most well-known and oldest indicator papers. Litmus is a natural product, derived from lichens. By roll, 7 mm length and 5 m width.
Colour change when entering the acid range.
| pH measuring range | 8.0 to 5.0 |
| Transition | alkali → acid |
| Colour conversion | blue → red |
Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
US$40
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