Quick and easy check for kalk saturation?
Randy,
I was wondering if there was some sort of test, scientific or not, that would determine whether or not a solution of kalk was saturated. Or is PH the only good guage? |
Conductivity is a far better gauge. Saturation is about 10.3 mS/cm. I show that here:
The Degradation of Limewater (Kalkwasser) in Air http://www.reefkeeping.com/issues/20...ture/index.php pH can be used,but is crude. With pH, I'd always compare to a true saturated solution (say 2 teaspoons in a cup of RO/DI water) and look just at the pH difference. A difference of 0.3 pH units is a factor of 2 in potency. |
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Also can anyone give me a good site or sites where I can get the meanings of these abbrevations ppm, mS/cm ect. Also a site with a periodic table and list of all the chemical elements and abbrev. Thanks Kyle |
How about a DIY conductivity meter?
http://www.reefcentral.com/forums/sh...uctivity+meter I might look into this. |
I do not believe that you can make an accurate DIY conductivity meter. The nature of the probe is much more complicated than a simple metal.
I describe the process a bit here: Using Conductivity to Measure Salinity http://www.aquariumfish.com/aquarium....aspx?aid=1804 Many companies sell then. For example, Pinpoint: http://www.americanmarineusa.com/salinityfacts.html Just make sure it has the right range. Many meters cannot read that high if they are primarily for monitoring purity of fresh water (like a TDS meter). |
Thanks for the help Randy.
Do conductivity probes need replaced as often as something like a PH probe? |
They are not usually left in the water, and are quite rugged for normal uses, so can last a long time.
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Great.
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And, if you would please, give your thoughts on a $47 handheld Milwaukee, or a $120 pinpoint. Thanks again. |
10,300. :)
Do you have a link to the Milwaukee? |
Sort of.
http://www.spectrapure.com/St_quality_p1.htm I did some more searching, and this one caught my eye. http://www.extech.com/instrument/pro.../EC400Lab.html However, they sell a replacement "conductivity cell", so it may not last very long. The pinpoint says it should last a "lifetime" |
The Spectrapure ones have their range too low. The Extech one is Ok for limewater, but cannot read salinity of tank water. The Pinpoint will do both, but not pure fresh water.The
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There are compromises everywhere, I guess.
Thanks for checking them out. |
:thumbsup:
There are compromises everywhere, I guess. Yes, the ones that do everything cost a lot more. Happy Reefing. :) |
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