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INDICATOR STRIPS TEST pH OF COMMON SUBSTANCES.Paper Is Treated With pH Indicators..Each strip is immersed in a household substance & compared to the standard color chart. Here a range of 2-11 is shown. Lemon juice shows a pH of 2, cider vinegar 3-4, distilled water 6, calgon 8, baking soda 9 & ammonia 11.
Copyright:© 2006 Richard Megna - Fundamental Photographs
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