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Kh4 for co2 dropcheker

2K views 7 replies 3 participants last post by  mistergreen 
#1 ·
Hi
I have up co2 dropcheker and i want to make kh 4 water.
Will 1.8 na2co3 with 1.5 litre distilled water give me kh 40???
Then mix 50 ml kh 40 with 450 ml distilled water will give me kh 4??
Tnx
 
#6 ·
The better way depends on how accurate your measuring equipment is. If you can measure 180 mg accurately that is a good method, but if you don't have the equipment to do that, you might be able to measure 10 times that with better accuracy, so that would be the better method.

In any case a 10% error in KH of the solution is just a 10% error in the ppm of CO2 that you determine, and the drop checker isn't nearly able to measure CO2 that accurately anyway.
 
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