How should the pill be blotted before weighing?

Blotting the pill before weighing is essential to ensure accurate measurement of the sample's weight without excess moisture interfering with the results. The correct method involves flipping the pill on the top and bottom surfaces to allow any surface moisture to be absorbed by the blotting material, followed by rolling the pill.

This comprehensive approach effectively removes moisture from the entire surface area of the pill. By flipping it, you address both the top and bottom surfaces, while rolling it further assists in ensuring that all sides have been adequately blotted. If only a single flip or just rolling were performed, there would likely still be some residual moisture, which could lead to inaccuracies in the final weight. Therefore, the method of flipping and rolling together is critical for achieving precise measurement conditions.