Quote Originally Posted by crsuarez View Post
ok, CarlD's directions worked...i used 1.8ML of the HomeBest bleach in between 10 and 17 litters (I just poured water into a 17 litter bucket without filling it) of non-pool water and I got a reading of 9ppm. Without being accurate I would think that the strength of the bleach is 5.25 or above and not 3%, correct?
Probably. If you used city water to dilute the sample, it probably had something less than 4 or so ppm free chlorine (I think 4.5 is the recommended max). My tapwater is usually about 2 ppm FC and 1 CC (chloramines are actually used for sanitation of drinking water).