R
Rancher
Guest
Do these really work?
Speedbump
Active Member
I don't know about that one, but I have one I can keep in my pocket like an ink pen and it works pretty good.
bob...
bob...
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R
Rancher
Guest
What's the brand and the source?
Rancher
Rancher
Bob NH
In the Trades
TDS meters are really conductivity meters that are usually calibrated for sodium chloride. If you have something other than sodium chloride you will get a conductivity reading but the TDS won't necessarily be the same as if a laboratory test is done.
The laboratory test is based on evaporation of a certain abount of water and weighing the resulting solids.
The laboratory test is based on evaporation of a certain abount of water and weighing the resulting solids.
R
Rancher
Guest
So my 20 MegOhm meter will also tell me something if I had a chart to convert to TDS.
Rancher
Rancher
Bob NH
In the Trades
No. The critical part of the meter is the electrode that presents a controlled area to the electrolyte, often includes temperature compensation, and converts the whole thing to a measure of conductivity.
http://www-ec.njit.edu/~grow/conductivity.htm
http://www.usm.maine.edu/chy/manuals/114/text/Conduct.html
http://www.hannainst.com/literature/litTDS1.pdf
http://www.hannainst.com/usa/literature.cfm
Speedbump
Active Member
The one I have doesn't have a name on it. I bought it from a Well Drilling Magazine I get monthly, but can't remember which one. If you really need one, I'll start looking for the ad.
bob...
bob...
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