KH reference solution

Henry Hatch

Guru Class Expert
Aug 31, 2006
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I keep my drop checker reference solution refrigerated. Does this have any affect when used in a drop checker ? When I mixed the solution up over a year ago it was 4.0 dkh. Now it tests at 3.0.
 

VaughnH

Lifetime Charter Member
Lifetime Member
Jan 24, 2005
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Did the solution test at 4 dKH when you first mixed it up, or was that a calculated value?

Refrigeration should have no effect at all, but if the container isn't air tight, some water could evaporate, which would raise the KH.
 

Henry Hatch

Guru Class Expert
Aug 31, 2006
179
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The solution did test at 4.0 when I first mixed it up. I'm going to try a new kh test kit and if I get the same result I'll just mix up a new batch.