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Re: TDS meter: which one ?
Sorry list to jump in here this late in the thread. Been "On the Road".
Does anyone out there know the factor Lee is referring to for the bargain Hanna
TDS meters that sold for about $14 a year ago?
Thanks
john
On 01-Mar-02 LeeH920226 at aol_com wrote:
> Most instrument manufacturers use potassium chloride as the standard for
> converting conductivity to TDS. In that case and that case only, the
> conductivity in microsiemens is exactly 2 times the TDS in ppm. However, no
> real water supply system has only potassium chloride in solution. For my
> water the conversion factor is about 1.7 times. So when I measure 120 ppm TDS
> on my TDS meter, that is really about 200 microsiemens conductivity.
>
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John N. Alegre o
Andante Systems o
eCommerce Consulting o
Custom Web Development <*{{{{}><
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E-Mail: listhub at andante_mn.org
Date: 21-Mar-02
Time: 15:10:36
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