Testing High Chlorine Levels

[thelma]

I'm going to be closing my pool for the first time and (unfortunately) have a CYA level of 100. (A long weird story that I still can't figure out totally.):(

If I'm reading correctly I need to shock to 25 according to the "best guess chart", but my Leslies DPD Deluxe Test Kit only goes to 5. How do I test for the higher chlorine to make sure I've hit it with enough bleach?

Thanks for the help!

[fcfrey]

Thelma,
The only way to ACCURATELYtest high levels of chlorine is to use the FAS-DPD method. This can be tested with Ben's kit or using the K-1515-A test kit from Taylor ($30.00 with shipping).
Since I didn't discover this site until it was too late, I bought all my test kits from Taylor direct here's the link: http://www.taylortechnologies.com/
I get next day delivery since I'm close.

A less accurate method is what is sometimes referred to as the shot gl*** method, take a shot of pool water and a shot (or 2) of distilled water and mix them then test. Multiply your test results by the total number of shots. THIS WILL GIVE YOU A SWAG (scientific wild @$$ guess) RESULT, but it is better than nothing if you don't have the proper kit.

Good luck on your first closing ---- lots of good advise on this site!!!

[thelma]

Thanks for your response.

I have another question.........

How much distilled and pool water is a shot? Is it the amount of water that goes into the testing vial?

[Watermom]

It can be any amount. All that you have to do is mix equal parts of pool water and distilled water. Test as usual and then multiply your results by 2.