Unit 2 Part 1 | General Pharmacy (BP102T) · B Pharm 1st Semester (PCI 2026 Syllabus)
Pharmaceutical calculations (percentage, ratio, dilution and more) with worked examples, explained for General Pharmacy.

Topics covered
- Metric system of weights and measures, prefixes and unit conversions
- Alligation
- British-Indian and U.S. proof scales
- Isotonicity, osmolality and isotonic adjustment
- Percentage strength: w/w, w/v and v/v
- Dilution calculations and geometric dilution
- Scientific notation, exponents and significant figures

Chapters
00:00 Introduction to pharmaceutical calculations
03:28 Metric system: definition and basic units
07:41 Metric prefixes and powers of ten
17:41 Pharmaceutical metric conversions
17:53 Alligation
28:02 Proof spirit: British-Indian scale
34:30 U.S. proof scale and alcohol strength
34:59 Isotonicity, osmolality and isotonic adjustment
50:01 Percentage strength: w/w, w/v and v/v
50:37 Dilution calculations
1:02:57 Geometric dilution
1:07:01 Scientific notation and significant figures

Study this subject in order
https://www.youtube.com/playlist?list=PLLRi8Uo4sGpw

Previous lesson: Prescription, screening and dispensing
https://youtu.be/HTFnDDyXjrA

Next lesson: Posology (available from 5 October 2026, 6 pm IST)
https://youtu.be/5mNIm4pmTGY

Notes and study resources
https://www.firsthope.co.in/b-pharm
Android app: https://play.google.com/store/apps/details?id=co.alexis.viki
iOS app: https://apps.apple.com/in/app/my-institute/id1472483563
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