300ng/ml is 300 micrograms per litre which is the same as 300ppb (parts per billion), or 0.3ppm (parts per million)
[parts] per hundred.
Well, honey, to convert micrograms per kilogram to parts per million, you need to multiply by 1,000. Why? Because there are 1,000 micrograms in a milligram, and 1,000,000 parts per million in a kilogram. So, it's just a matter of shifting those decimal places around to get the job done.
-- take the number of parts per thousand-- multiply it by 1,000-- the answer is the number of parts per million
A billionth is one of a billion equal parts.
Parts Per Billion
Nickel is an element. Therefore, in any nickel item it is 1 billion parts per 1 billion or 1 million parts per million.
Parts Per Billion - 2014 is rated/received certificates of: USA:R
1000parts per billion = how much gold per to n in grams
50ppb is equal to 0.05ppm
Parts Per Billion - 2009 SUSPENDED was released on: USA: 2009 (limited)
You probably mean "abundance of mercury on Earth". Its abundance in Earth's crust is 85 parts per billion by weight, 9 parts per billion by moles. The most abundant naturally forming isotope is 202Hg is at 29.86%.
48.5ppb equates to 0.0485ppm
58 ppb = .058 ppm
1 part per billion by weight, 0.2 parts per billion by moles.
parts per billion
parts per billion