Posted by Larry Hoover on April 10, 2003, at 12:26:07
In reply to Now I am confused! - Bluedog, posted by jodeye on April 9, 2003, at 16:48:14
> Hi,
>
> You were measuring your doses in rounded teaspoons, now mixing in metric, the math gets more involved.Actually, getting away from imperial measure vastly simplifies the math. Everything's decimal, as contrasted to three teaspoons in a tablespoon, two tablespoons in an ounce, 32 (or 40) ounces in a quart, etc.
For example: Dissolving the 500 grams of Mg chloride hexahydrate in one liter of water gives you a solution of 60 grams of Mg in 1000 mL of water (determined in previous posts). To get a particular mass of Mg, you solve for a volume in mL. To get 0.5 grams Mg (500 mg), you set up a ratio like this:
1000 mL/ 60 grams = X mL/ 0.5 grams
Rearrangement gives : X mL = (1000 mL)(0.5)/60 (the grams cancel out)
= 8.33 mL
You can get graduated "spoons" measured in mL at any pharmacy, as pediatric medication is often in a liquid form, permitting dosing by body mass.
Setting up the ratio a little differently allows you to figure out how much Mg is in a specific volume. A standard teaspoon is 5 mL.
> Actually, my Dr. told me I could mix it anyway I like, without knowing the milligrams, since I am trying to consume maximum magnesium without causing laxative effect, however much that may be. I just need to be sure to mix it the same way each time.
> Aloha,
>
> --jodeye
>
>
>
poster:Larry Hoover
thread:214008
URL: http://www.dr-bob.org/babble/20030407/msgs/218190.html