Thread: Add Calcium to your DI water
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  #19  
Old 03-19-2010, 04:41 AM
RuGlu6 RuGlu6 is offline
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Quote:
Originally Posted by medhatreefguy View Post
What unit of measure is your TDS reading, certainly not PPM.
I think TDS (Total Dissolved Solids) is measured in PPM (Parts Per Million)
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