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Using the 0.001g/l concentration: 400ppm x 0.001g/l = 0.4g/l.or, Divide 400 mg by 1000 to get g/l = 0.4 g/l Now divide by the At. 0.4g/l divided by 40g/mol =0.01M Using the mg/l concentration, the 40g Ca must be converted to milligrams by multiplying by 1000 to give 40,000mg.“ppm” is a measurement of parts per million while “ppmv” is a measurement of parts per million volume. “ppm” should always be followed by: “by-weight” or suffixed by “w” that is “ppmw” while “ppmv” in itself is self-explanatory and need not be suffixed or followed by any other word. You agree that we have no liability for any damages.Articles on Difference are general information, and are not intended to substitute for professional advice.

PPM is a term used in chemistry to denote a very, very low concentration of a solution.

“ppm” or “ppmv” can also be expressed in percentages such as: 1 ppm/ppmv means 1 part in 1,000,000 parts that is 0.0001% 5 ppm/ppmv means 5 parts in 1,000,000 parts that is .0005% 10 ppm/ppmv means 10 parts in 1,000,000 parts that is 0.001% 100 ppm/ppmv means 100 parts in 1,000,000 parts that is 0.01% 1000 ppm/ppmv means 1000 parts in 1,000,000 parts that is 0.1% One should be careful which notation is being followed as in both, that is, American or EU notations “million” is different.

In the American notation, I billion=1,000 million In the EU notation, 1 billion = 1,000,000 million Summary: 1.

In cases of some liquids, if some substance is dissolved in it, it is denoted by” ppmw” or “ppm,” indicating a weight of dissolved substance in its one million weight.

A unit of weight can be denoted in kg, gram, or any other weight unit.

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PPM is derived from the fact that the density of water is taken as 1kg/L = 1,000,000 mg/L, and 1mg/L is 1mg/1,000,000mg or one part in one million. of Na = 23 1g Na in relation to FW of salt = 58.44 / 23 = 2.542g. Make a 1000 ppm phosphate standard using the salt KH standard.

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