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Re: Water Chemistry
From: "gooch"
Sent: Monday, November 27, 2000 8:45 AM
> Is there a conversion for microsiemens to PPM conductivity.
Conductivity is a measure of the water's current carrying ability, while TDS
is determined through a gravimetric test. The conversion is an empirical
one, and varies from about 0.6 - 0.9 x µS to obtain ppm TDS. The value
shifts with the types of ions involved and the temperature of the solution.
Check with your local water supplier. If you are on their lines, they can
give you the local conversion value easily enough, and most likely will know
something about the aquifer if you aren't. This value should remain
relatively intact if you have to soften your water and do so with RO or
distilled. It probably won't if you use something like peat filtering, and
certainly won't if you're hardening the water.
Most of the time, in non- critical calculations (_extremely rare_, if
existent, that the determination is critical for our purposes), just shoot
for "center mass" and use the median 0.75...
-Y-
David A. Youngker
nestor10@mindspring.com
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