Conductivity monitor micro seimens - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 07-23-2011, 03:05 AM Thread Starter
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Conductivity monitor micro seimens

In using the American Marine conductivity meter it reads in units of micro seimens. Easy conversion to DH, KH?
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post #2 of 5 (permalink) Old 07-23-2011, 03:25 AM
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I don't think you can convert to those units without some other measurements. Conductivity does convert to SG easily if I remember correctly. Conductivity is simply a measurement of ion concentration. Nothing else. You can't determine without some other measurements the difference between any ions as you would need to know that for KH or GH measurements.
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post #3 of 5 (permalink) Old 07-23-2011, 10:59 PM
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What numbers are you getting? My tap water is ~0.60 mS, my tank water between ~0.85 and 1 mS. That's milli Siemens.

I think there is a way to convert the EC values into TDS, but not KH or GH.


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post #4 of 5 (permalink) Old 07-24-2011, 01:00 AM
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You can use the approximation that 2uS/cm = 1ppm, but that is for all ions in solution not just those contributing to water hardness. There is inherent error in that approximation.
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post #5 of 5 (permalink) Old 07-25-2011, 02:49 PM
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+1. TDS is approximated via conductivity (uS/cm) as said above. Some meters will allow you to switch from TDS to conductivity units. kH and gH are not all that contribute to conductivity. A separate testing kit is needed.


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