pH Paper Strips
Order pH Paper StripspH papers are made with the special indicator dyes that change color at specific pH values. The useful limit of color change for most individual indicators is about 2 pH units. Beyond this limit no further noticeable color change takes place, regardless of further change in pH. For example, with a pH 6.0 to 8.0 range test paper test paper a reading of a solution which falls within these points can be taken correctly. However, if the pH of the solution is lower than 6.0 or higher than 8.0 the test paper cannot indicate the correct pH value but will show the 6.0 or 8.0 color of the chart.
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