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Need Some help whit A calculation

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xandro007

Member
Joined
5 Feb 2016
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69
Location
Belgium
I have a Gh test in dGH° and a calcium test in ppm
So What is the formule to calculate Magnesium in ppm



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[Measured dGH - (PPM of Ca / 7.147)] x 4.333

4.333 PPM of Mg = 1dGH (German degree)
7.147 PPM of Ca = 1dGH (German degree)
 
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