What is "mg per cent?"

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Offline Cut Chemist

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What is "mg per cent?"
« on: 05/08/2007 03:23:36 »
I was reading some older medical journals, and ran across this unit for concentration, which I didn't understand. 

My best guess is that it means 1.00 mg per 100.00 mg (% by weight)

Anyone familiar with these units?? 
 

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Offline eric l

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What is "mg per cent?"
« Reply #1 on: 05/08/2007 09:09:58 »
I have read similar data (expressed in mg percent) and based on the values I would guess it to be mg per 100 g.  But that is just an "educated guess".  (I also met concentrations given in mg/dl, which in water would be very much the same)
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Offline chris

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What is "mg per cent?"
« Reply #2 on: 05/08/2007 12:31:12 »
When you make a solution by percent you are dissolving a mass (usually in grams unless otherwise stated), in 100 ml (= 100g if it's water) of solvent. So mg percent in the context of a blood alcohol means the number of milligrams of ethanol (alcohol) per 100 ml of blood.

Chris
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