Infusion time is generally assessed by the total amount of liquid, the equivalent number of drops per milliliter and the number of drops per minute to evaluate an infusion time, and the dosage can be calculated.

To calculate infusion time, you need to know three variables, the total infusion volume (ml), the number of drops per minute (drops per minute), and the drop coefficient (drops per ml). The formula is as follows: infusion time (min) = total infusion volume (ml) × drop coefficient (drops/ml)/number of liquid drops per minute (drops/min).