PPT Slide
Before we begin converting units, lets study the rules of apothecary
Rules of Apothecary Notation:
1) The unit (label) precedes the amount. Example: gr v, not v gr
2) Lowercase Roman numerals express whole numbers (in some cases).
Examples: iii (three ounces)
This strange looking symbol means ounces.
And this is the Roman Numeral “3”.