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mixed pH (milk/coffee/tea/gouqi/sugar) | mixed pH (milk/coffee/tea/gouqi/sugar) | ||
(And is there any pH difference belongs to temperature? hot and cold ) | (And is there any pH difference belongs to temperature? hot and cold ) | ||
question: | |||
how to deal with the thing insoluble in water, for instance, oil, cosmetic... | |||
==References== | ==References== |
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