Ratio Strength Calculations

Ratio strength calculations video illustrates how to solve ratio strength calculations questions. This tutorial gives a brief review of the different ways of expressing concentration, defines what ratio strength is, discusses how ratio strength should be interpreted, shows how to convert percent strength to ratio strength and vice-versa, demonstrates how to calculate the ratio strength of a pharmaceutical preparation and provides three strategically selected example problems.

Here are a few highlights:
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Definition: Ratio strength describes drug concentration in terms of a ratio. Here, concentration is defined in terms of one unit of solute contained in a total amount of solution or mixture.

Interpretations:

For example 1:2000

For solids in liquids implies you have 1 g of solute or constituent in 2000 mL of solution or liquid preparation.

For liquids in liquids implies 1 mL of solute or constituent in 2000 mL of solution or liquid preparation.

For solids in solids implies 1 g of constituent in 2000 g of mixture.

Link to Video Mentioned in this tutorial:
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Here is the link to the percentage concentration calculations video mentioned in this video:

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RxCalculations helps you master pharmaceutical calculations. We make it so you never have to worry about failing an exam or compromising patient safety because of a calculations error. RxCalculations is a leading global educational service platform focused on developing top quality pharmaceutical calculations products to help prospective pharmacists and health care professionals all over the world resolve one of the biggest challenges related to their profession.

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[PharmaceuticalCalculationsEasy]

Thank you so much for watching! Do you have any questions about ratio strength calculations? Please share them below. Also, are there other pharmaceutical calculations topics you like video tutorials made on? Mention topics in the comments as well.

[charleneminiely]

You are a treasure! The way that you have broken down and explained the subject matter has been of tremendous help to me. My textbook does not explain this nearly as well as you have. I actually understand. Thank you!

[nicksix]

Thank you so much for this explanation! "I once was lost, but now am found." Grateful!

[emetitiri]

Thank you so much for your thorough descriptions. I agree with both comments from Charlene Miniely and Nick Bastian: so glad to now understand what I am doing!

[lilywhite]

Thank you so much for your videos may God bless your work

[Taiyella]

OMG thank you! I appreciate you get straight to the point

[dorothydzimbiri]

Thanks so much for the video ☺️
It's has been helpful!!!

[shoaib]

Thank you so much for your videos, this exactly the explanation I was looking for.

[weronikaromanska]

Thank you so much !! This video was very helpful :)))

[latarshacarpenter]

if 3 oz of glycerin are dissolved in 23 fluid ounces of purified water, what is the percent strength (w/w) of glycerin in the resulting solution? Glycerin has a specific gravity of 1.25.

[agusta]

Hello Dr. Danquah, can you help with this problem? thanks. The proper concentration of benzalkonium to prevent bacterial contamination in an eye drop is 1:750. You have a stock solution of 17% benzalkonium chloride and a dropper that delivers 50 drops per ml. How many drops will you need for a 30 ml bottle of eye drops?

[issasvlogs]

How many grams of sodium fluoride should be added to 125, 000 L of drinking water containing 0.6 ppm of sodium fluoride to provide a recommended concentration of 1.65ppm?

[MunaadilpharmD]

thank you so much you can not image how this video help me