need help

Questions and answers on how to convert things from one unit or system to another


need help

Postby » Wed Jan 17, 2007 1:58 pm

need to convert milligrams per litre to parts per million
for pool cemical level

Postby Guest » Wed Jan 17, 2007 7:21 pm

Temperature, and the total concentration of chemicals could SLIGHTLY change the density of water from 1 kg/L, but in practical cases, it would still be that to 3-4 significant figures. Therefore, in water, mg/L is essentially mg/kg, and therefore parts per million.

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