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Re: Chemistry question :)
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Originally Posted by danielf
Right, I will try an explanation for the 5 mil answer then. Assuming 1 million parts per mililiter, you need add add 19 mils of solution (going by my above assumption) to get to 2.5 ppm. This makes 20, so multiply both by 5 to get to 100 total. So, 5 mils of the original
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I concur
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