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Tue Sep 23, 2008 5:25 am  |
Oh how I've sweated over this! Then I found this info on the GOW Forum thanks to someone called Traci - here's her instructions:
1) Let's say you want to find the % for 2 ounces of aloe juice that you want to include in your concoction that will be a total of 8 ounces. Divide 2 by 8 and move the decimal point 2 places to the right - that's your %!
2/8 = 0.25 = 25%
25% of your concoction is aloe juice!
Make sure the units are the same, i.e., adding ounces to ounces. before getting the %
If they are not, and you are adding, say, 1 teaspoon liquid to 8 ounces liquid, then you have to change the 8 ounces to teaspoons. Using this conversion: Ounce (liquid) = 6 teaspoons,
multiply the 8 ounces times the 6 teaspoons.
8 x 6 = 48 teaspoons
NOW divide the 1 teaspoon by the 48 teaspoons and move the decimal point to come up with the %.
1/48 = 0.02083 = 2.083% or just 2%
So 2% of the concoction is the 1 teaspoon ingredient.
2) Now the other way around. Lets say the recipe calls for 0.05% of an ingredient. First you need to know the total amount you want to end up with. Let's say 4 ounces. Move the decimal point 2 places to the left in the % number, and then multiply that times the 4 ounces.
0.05% = 0.0005
.0005 x 4 = 0.002
So you would need 0.002 ounces of the ingredient. That's a very small measurement, and needs to be converted to "drops." This conversion is not exact, but can be used: Ounce (liquid) = 480 drops
Multiply the 0.002 times the 480 to find how many drops.
0.002 x 480 = 0.96
You would need 0.96 drops, which is almost 1 drop.
So, 0.05% of the ingredient in 4 ounces of finished product is 1 drop!
Here is a handy calculator where you can convert ounces to teaspoons:
http://www.gourmetsleuth.com/gram_calc.htm
So for your 2% of glucosamine in a 2oz solution:
0.02 x 2 = 0.04oz
go to gourmetsleuth calculator and covert the 0.04oz to teaspoons:
Answer = .24tspn. which would be about 1/4 tspn.
Disclaimer!: I am the biggest maths dummy on the planet, so if I've got this all wrong please let me know because this is how I've been working it out for my serums.
Here is a conversion table of weights and measures: http://www.emsplace.com/ref/bcweight.htm |
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