## **Core Concept**
Manual mulling is a technique used in pharmacy to mix and blend ingredients, particularly for small-scale preparations. It involves manually turning and folding the mixture to achieve uniformity. The process is crucial for ensuring that the final product has a consistent composition.

## **Why the Correct Answer is Right**
Manual mulling is typically carried out for not more than **20 times**. This limited number of turns helps prevent excessive exposure of the mixture to air, reduces the risk of contamination, and minimizes the potential for ingredient degradation. Over-mulling can lead to a decrease in the quality of the final product.

## **Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because is not a commonly recognized limit for manual mulling.
* **Option B:** This option is incorrect because is less than the commonly accepted limit.
* **Option D:** This option is incorrect because exceeds the commonly accepted limit of .

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that manual mulling is primarily used for small-scale preparations where precision and control over the mixing process are crucial. Over-mulling can introduce air, lead to contamination, or cause uneven distribution of ingredients.

## **Correct Answer:** . 20 times