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Re: TDS Meters



For anyone who is interested, the relationship between TDS and conductivity 
is variable depending on the nature of the dissolved salts. For the 
"standard" KCl (potassium chloride) it is 2:1. That is the conductivity in 
microsiemens is twice the TDS in ppm. For other salts it is different, as low 
as 1.17:1 for "natural water"
For more details see:
http://www.eutechinst.com/techtips/tech-tips12.htm

    The Hanna promotion is $14.90 plus shipping for the TDS meter. Check it 
out at
http://www.hannainst.com/products/promo/usa/usaprmo.htm

    Only valid in the USA until the end of the year.

Lee Harper
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