phASTmaths Image
Skip to Main Content

PhAST Track Mathematics Module: Concentration: Ratio strength

Ratio strength

How is ratio strength expressed in pharmacy?

Generally, ratio strength is expressed with the whole number, 1, preceding the colon.

Example

As in other ways of describing concentration in pharmacy, the units used in ratio strengths are grams and millilitres. I.e., if the ratio strength is 1:6w/v, this represents 1 gram of active in 6 millilitres of a liquid preparation. 

You will need to be able to translate a ratio strength into a useful “amount per amount” or percentage strength.

Navigation

                         

We acknowledge the Australian Aboriginal and Torres Strait Islander peoples as the first inhabitants of the nation and acknowledge Traditional Owners of the lands where our staff and students, live, learn and work.Acknowledgement of Country

Creative Commons Licence
This work is licensed under a Creative Commons Attribution-ShareAlike (CC BY-SA) 4.0 International License, unless otherwise noted. Content from this Guide should be attributed to James Cook University Library. This does not apply to images, third party material (seek permission from the original owner) or any logos or insignia belonging to JCU or other bodies, which remain All Rights Reserved.

.