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However, water comes from different sources, like tap ... pH: Universal indicator can be used to give an approximate pH value for a solution by comparing the colour of the indicator to the colour ...
1monon MSN
Most tap water has a pH of around 7.5, and the EPA recommends a range of ... The pH test strips also came in handy, and I was able to see on the color chart that my levels were very good, providing me ...
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