Hard gelatin capsules come in different sizes based on volume.
Volume in mL
If graphed out this shows an exponential change in volume vs size.
Factors affecting the fill of a capsule:
(1) pressure applied
(2) amount of dead space
(3) residual moisture
If a drug powder has a certain density in grams per mL
volume of drug powder in mL =
= (weight of powder in grams) / (density)
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Specialty: Pharmacology, clinical