Testing for chlorine - sample does not turn pink

rnaval

Well-known member
Aug 13, 2015
54
Melville, NY
I opened the pool yesterday and put in 10 gallons of bleach 6% Sodium Hypochlorite, but when testing the water sample the next day, it does not show any FC, sample did not turn pink after I added 2 dippers of R-0870. i then took a cup of water half mixed with the same bleach and it also did not turn pink when I tested. Any ideas?
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
29,707
Laughlin, NV
How old was the bleach? Though, depending on the condition of the pool water, it might have consumed that FC add of 19ppm overnight.

The second test would have bleached out the sample, so that does not count.
 

Donldson

TFP Expert
LifeTime Supporter
Jun 12, 2009
4,421
NW Ohio
In the first instance you had zero chlorine.

In the second instance you created a sample that was 30,000 ppm, so it bleached out your test.
 

Richard320

TFP Expert
LifeTime Supporter
Jan 6, 2010
23,617
San Dimas, CA (LA County)
Add the powder. If it doesn't turn pink, that means zero FC. Then add the R-003 and see if it goes pink. You might be turning all that FC into CC. If so, you want to know before you dump another thirty bucks worth of bleach in.