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Alkaline Lemons
Recently, people have been trying to tell me that natural foods are all alkaline. I thought I'd test for myself...
(Sorry about the quality of th...
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PeteXZ said:
@2012Wordsmith They are called universal indicator papers. They are sold by laboratory suppliers, but you can also get them on places like eBay. Seach for 'indicator paper' or 'universal indicator paper'. They are pretty cheap; a book of papers will cost you about £1 or £2. You probably want ...