That depends what mass a million of these parts hold - then you can multiply it by 0.000166 to find 166 parts per million of this substance.
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There are 166 parts per million (ppm) of a substance in a solution. The conversion of ppm to grains per gallon depends on the specific substance being measured, as different substances have different conversion factors. For instance, for calcium carbonate, 166 ppm is equal to approximately 9.7 grains per gallon.
To convert parts per billion (ppb) to parts per million (ppm), you divide by 1000. So, 28 ppb is equal to 0.028 ppm.
To convert from cmol/kg to ppm for calcium (Ca): 1 cmol/kg of Ca = 40.08 mg/kg 40.08 mg/kg = 40.08 ppm So, 5 cmol/kg of Ca is equal to 200.4 ppm.
1 TDS (Total Dissolved Solids) is equal to 1,000 ppm (parts per million).
To convert parts per million (ppm) of a substance to grains per gallon (gpg), you need to know the atomic or molecular weight of the substance. Once you have this information, you can use the formula: gpg = ppm x (atomic/molecular weight/7000).
To dilute 1000 ppm to 500 ppm, you need to add an equal amount of the solution without any concentration. For example, if you have 1 mL of the 1000 ppm solution, you would need to add 1 mL of water to make it 500 ppm.