(c) pH measurement: The measurement and maintenance of pH is also a very important step in quality control testing. The physical appearance of products for patient adherence and compliance is critical so it should be (b) Visual inspection: With a visual inspection, the ingredients and the final products are carefully examined for purity and appearance. Any of these conditions may diminish the light that is transmitted through the sample and therefore lowers the grade of the sample. When using one, you need to be sure there are no fingerprints on the syrup test bottle, and that the syrup sample has no bubbles or cloudiness. The percent of light transmission is compared to light transmission rates set for different grades. In a light transmittance meter, a syrup sample is checked for color by passing light through the sample. (a) Transmittance of light: A light transmittance meter is a newer tool that is used to check syrup color. It is commonly expanded to include any liquid dosage form (e.g., oral suspension) in a sweet and viscid vehicle.įollowing tests are carried out for the evaluation of syrups: A concentrated solution of a sugar, such as sucrose, in water or other aqueous liquid, sometimes with a medicinal agent added usually used as a flavored vehicle for drugs.
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