Product Application
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The pH scale measures how acidic or basic a substance is. ... A pH greater than 7 is basic. The pH scale is logarithmic and as a result, each whole pH value below 7 is ten times more acidic than the next higher value.
pH indicators are weak acids that exist as natural dyes and indicate the concentration of H+ (H3O+) ions in a solution via color change. A pH value is determined from the negative logarithm of this concentration and is used to indicate the acidic, basic, or neutral character of the substance you are testing.
A universal indicator paper is a compound solution or a mixture transfused with a number of pH indicators to detect alkalinity or acidity of various solutions.
