Litmus paper is a tool used to test whether a substance is an acid or base. When a substance is dissolved in water, the resulting solution causes the litmus paper to change color. The acidity or alkalinity of a solution is determined by the concentration of hydrogen ions, or power of hydrogen, expressed as a pH value. A litmus test provides a quick result but cannot determine the level of acidity or alkalinity of a solution.
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Uniformity of Dosage Units
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Uniformity of Dosage Units is a specialised analytical laboratory service that assesses whether individual dosage units contain sufficiently consis...
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