Disodium Phosphate mixing

Xanthurum

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Looking for advice on how much Disodium Phosphate to add to what amount of RODI to make something similar in concentration to NeoPhos? This is what I purchased off Amazon. Thanks in advance for any help.

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Randy Holmes-Farley

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I don't know the concentration of neophos (Brightwell doesn't say what it is that I can find).

You can use this calculator to get an estimate of the potency of a new solution for dosing. use the entry for potassium phosphate:

 
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Xanthurum

Xanthurum

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In case anyone wanted to know I mixed up a batch of the following ratio 1/2 teaspoon to 1 gallon of RODI and decided to try an experiment. I used my Hanna ULR phosphate kit and put 1 drop of NeoPhos in 10ml of water then added the powder. I also did the same with the stuff I mixed and here are the results, the checker would not read either but as you can see the one on the left is a much darker blue than the other. The darker blue is NeoPhos and the light blue is what I mixed up.

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