1 ppm is approximately 1gram per ton
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If you have 1 million parts of something 10 parts would be 10 parts per million. If you had 2 million parts of something 20 parts would be 10 parts per million.
-- take the number of parts per thousand-- multiply it by 1,000-- the answer is the number of parts per million
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.
.000035
No. Even if that were milliliters to liters, it would still be parts per thousand.