08-26-2010, 09:43 AM
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#8
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Algae Grower
Join Date: Oct 2007
Location: Scotland
Posts: 10
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Quote:
Originally Posted by Darkblade48
As long as your initial calculation was correct, then your dilutions seem OK.
Your last dilution is incorrect, however.
To 200 mL of 5 dkH, adding 40 mL of distilled water will yield 240 mL of 4.16 dkH reference solution, not a solution of 4 dkH.
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200 / 5 = 40 per 1 dKH.
What am I forgetting?
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