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How to Calibrate a PH Tester | eHow
瀏覽：1005
日期：2025-07-08
The alkalinity of a liquid is indicated by its pH level. The scale generally ranges from 0, a very strong acid, to 14, a very strong base. A neutral solution such as pure water has a pH of 7. Testers are used in a variety of applications such as electropl...看更多
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