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These test papers are produced by one of the world's leading manufacturers and are supplied in plastic bottle with a water-tight stopper. The blue litmus paper instantly turns red in solutions with a pH below 7. The red litmus paper instantly turns blue in solutions with a pH above 7. Each strip is 45mm x 6mm.
New 2dp 500g Economy Balance For Less Than £15.0021/11/24
A fab day in Stevenage!06/11/24
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