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Disinfectant calculation

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Acidicme:
If you have a 1.75%W/W of benzalkonium chloride
How much water would you need to make up a 1.33mg/ml concentration of 5L?

Hunter2:
Basic mathematics.
Calculate how much you need if 1,75%  = 1,33 mg
This gives the value per ml. Then calculate up to 5 l. Normaly you need the specific gravity to convert 5 l in kg. The Difference from 5kg is the amount you have to add.

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