How do you calculate parts per million (or billion) from grams and volume?
I ask this in relation to figureing out how to translate water report information into the recommended ranges of certain brewing salts for emulating water profiles.
Actually its moles free, so no chemistry text or periodic table needed. I just looked it up and did the math.
1ppm means one part in one million parts.
For instance then. 1 milligram in 1 kilogram. (1kg=1000g=1,000,000mg)
The more relavant application for brewing would be mg of solid (CaCl2) in a liter of water. Its tricky because first you need to assume that 1 gram=1milliliter of water.
So 1 ppm is 1mg/Liter via the following:
0.001/1000 = 1/1,000,000 or 1ppm
Though, I don't know the actual math (and disappointed that it doesn't involve calculating molarity), I did find this calculator to be helpful (if not saturated with Google ads).