It is impossible for the ppm to change with temperature. PPM is a constant, unless you have some settling out, or the water is evaporating. How are you measuring the ppm? Remember conductivity increases significantly with temperature, so if you are measuring conductivity you are measuring a change in conductivity with temperature.

Marshall

On 9/22/2012 2:21 PM, Lou Kraft wrote:
I have noticed that if I heat my finished CS (microwave or stove) the ppm increases exponentially. An 8ppm solution increased to 16ppm when heated to near boil and returns to 8ppm at room temp. Is this just the separation of large molecules to smaller when stimualted by heat? Lou
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