what is a ppm and how many equeal a mg??

Question

for example this product has 7.987 pps of copper.

Answer 1

ppm is "parts per million" which are units of concentration. It's more or less a ratio which is unitless.

mg is "milligrams" which are units of weight.

You can't equate the two without some additional information.

For example, if a rock contains 50ppm of uranium (50/1,000,000), and the rock weighs 100g (100,000mg), then the rock contains:

50/1,000,000 * 100,000 mg = 5mg of uranium.

Without the additional piece of information (the total weight to which the concentration applies) you can't get a weight from the concentration.

Answer 2

ppm is parts per million. If you dump 6 quarts of oil into a million-quart lake, your lake has 6 ppm oil. Scientists use ppm to make numbers look bigger. 0.0006% doesn't look bad, unless you are dealing with something that will cause cancer in doses of 2 ppm; then 0.0006% is 3 times the dose you need to cause cancer, and everyone who swims in the lake will die, eventually.

mg are milligrams.

mg and ppm don't convert to each other. 6 mg of lead would be a flyspeck. 6 mg of helium might fill a (very) small test tube.

Answer 3

ppm stands for 'parts per million', meaning that for every 999,999 particles of a substance there is one particle of this substance( or this substance composes 0.00001% of the solution). It is not a measure of mass as mg is. Its relation to mg would be based on the solution which it is part of.

Answer 4

ppm is parts per million

ie, the dilution/concentration of a gas or liquid

mg is the abbreviation for milligram, ie 1/1000gram or 0.001 gram.

there is no direct correlation / conversion between the two, you need more information.

Answer 5

a ppm is a part per million.
so in a kilogram of material 1ppm = 1mg.