My test kit only goes to 5 for chlorine, how do I test for results above that number?
Thx in advance
My test kit only goes to 5 for chlorine, how do I test for results above that number?
Thx in advance
You have totally blown my mind on that statement. Are you saying I add 1/5 pool water and 4/5's distilled water to my test kit then add the drops for chlorine testing?
Then what, multiply the read out by, I would assume 5 based on the ratio?
It's been alot of years since college chemistry and math.
Thx in advance
Yep.I referenced this thread for sanity as well. http://www.poolforum.com/pf2/printthread.php?t=7496
Carlo.
Because you have to test for a much higher level of chlorine, you may want to invest in a FAS-DPD test that can go much higher reliably. I think it will measure up to 50 - not that you'd be going quite that high... While the dilution/shot glass method will work, I never felt all that convinced that my results were correct, so I was quite glad when I received my kit that included the FAS-DPD for chlorine.
It's possible to buy just the FAS-DPD test for chlorine without buying an entire kit. Look for CarlD's reply #6 in this thread:
http://www.poolforum.com/pf2/showthread.php?t=7505
Sandy
15,600 gallon, screened 15x30 IG plaster sport pool with 6x8 tanning area, Aquarite SWCG, Hayward cartridge filter, Polaris 280 cleaner
Alright, just went home to check the status of the pool. It is about 80% clear now and more blue than green, so I am assuming things are getting in control.
I adjusted the Chlorine up to about 22ppm and will test again in 8 hours and adjust again if needed.
I will keep you posted on the results.
Thanks everyone for all the help, I know my family will appreciate tremendously.
The dilution method for testing chlorine above 5ppm with an OTO test is wildly innaccurate. 1 to 1 dilution might get you in the ballpark but a 4 or 5 to 1 test I would trust like a used car salesman.
The FAS/DPD method is really the only RELIABLE way to test much above 10ppm. You would probably get closer by waiting 'til Cl goes to 5 or below and calculating what you need to bring it up to a desired level.
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