When I enter 8% chlorine into the FC table the calculator it reads "Weight", however when I enter 12.5% the word changes to "Trade". Just wondering what the difference is and why that difference is noted?
Interesting. So the 8.3% great value bleach at walmart is actually probably a higher percentage of sodium hypochlorite than the 10% liquid chlorine they were selling in the pool section for a while. That would explain why when I switched from the liquid chlorine stuff to the laundry aisle stuff, I didn't have to alter the timing on my stenner to meet my target FC level, even though going from 10% to 8.3% made me think I should have had to use more.
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