( paging chem_geek to the white courtesy phone :lol: ) Observe that 10% (active CL) concentration has 14.3% more active chlorine per unit volume than the 1% concentration has per unit volume after accounting for 10x factor. Curious thing about that table: the g/l is nonlinear with the % concentration. So, that lead me to this chart (page 2) that conveniently lists the grams of active chlorine per liter of various concentrations of various bleach solutions. But, measuring mass is considerably more troublesome than measuring the volume through a positive displacement pump. mass of NaOCl / total mass), yes? I don't think "trade percent", nor "active chlorine weight percent" are common based on how this document describes it.Īrriving at the mass of chlorine needed to achieve a given PPM concentration is relatively straight forward (shown below). In the process of validating the math for my bleach automation system, and I ended up down a rabbit hole learning about various methods of how bleach concentrations are characterized.Ĭorrect me if I'm wrong here, but, I think it's most common for US companies to specify the concentration as the weight percent of NaOCl (i.e.
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