Let's say I have a bucket of 20 liters of sodium hypochlorite acid at 12.5%
To make a 0.028% solution of hypochlorus acid.
I want to make a 1 gallon solution since creating a 5 gals is useless (I guess it's less effective overtime?)
I have to add 7ml of sodium hypo to 1 gal of water... as stated by Misterblah
But then Klx is asking if he has the right way: 12.5g in 87.5ml of water to make a 12.5% solution but then add 18.6ml of that solution to 10 liters... it gives the same .02308
How do we calculate the .028% vs 12.5%
7/3790 = 0,0018469656992084... * 12,5 = 0,0230870712401055 and not .028% as stated... So I am kinda confused...
Also, another question, if we have a 65% solution instead of a 12.5%, we simply divide the 65/12.5 to calculate the amount needed?
Thanks for help