Related Experiment Video
Updated: Jun 25, 2026

Synthesizing Sodium Tungstate and Sodium Molybdate Microcapsules via Bacterial Mineral Excretion
Published on: January 30, 2018
A laboratory exercise in capsule making
1School of Pharmacy, University of Charleston, Charleston, WV 25304, USA. kristacapehart@ucwv.edu
Objective:
To create and implement a compounding laboratory exercise utilizing a variety of techniques and equipment.
Design:
A 3-hour laboratory exercise on preparing compound prescriptions for capsules was developed and taught to first-year doctor of pharmacy (PharmD) students. Students completed appropriate preparations and calculation of ingredients and prepared capsules using a hand-packing technique and a capsule-filling machine. The students then individually weighed the capsules and performed batch testing for uniformity.
Assessment:
Ninety-six percent of the students who completed the laboratory performed the necessary calculations for machine-prepared capsules correctly and 100% completed the calculations for the hand-filled capsules correctly. With the hand-filled capsules, 100% of the students processed all 4 units within +/-5% of the stated capsule weight and capsules were deemed successful and accurate.
Conclusion:
Students acquired a firm grasp of basic compounding techniques and the skills to prepare accurate, safe, and uniform dosage forms for patients.
Related Concept Videos
Endoscopic Procedures III: Video Capsule Endoscopy
Formulation and Manufacturing Process: Physical Attributes of Generic Tablets and Capsules

