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 Post subject: Possible bad R-0003 reagent?
PostPosted: August 29th, 2011, 9:41 am 
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Joined: July 28th, 2008, 11:39 pm
Posts: 46
I recently broke out a new vial of this reagent. Now I'm suspecting that it is possibly bad because my CC numbers have been uncharacteristically low (more or less zero when usually I run about 0.5-1 due to so many leaves that fall into my pool).

Is it possible that this reagent is bad, or am I just running my pool just right for once?

Thanks!

- jeff



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15,000 gal SWG pool, cartridge filter, all pentair equipment, variable speed pump, 400K BTU heater and spa, pebbletec finished
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 Post subject: Re: Possible bad R-0003 reagent?
PostPosted: August 29th, 2011, 9:47 am 
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Joined: July 30th, 2010, 8:56 am
Posts: 1785
Location: Minnesota
What color is it?

Quote:
R-0003 is DPD Reagent #3. It should be a clear colorless liquid. If it turns yellow, it has gone bad.



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Going to Pool School and learning the BBB method of pool care with a TF100 test kit that helps me use the Pool Calculator to properly maintain the water in my: Round AGP 11K gal (free on CL) with a deep end, Meteor 20" sand filter, Matrix 1hp 2spd, 4 2ftX20ft Sungrabber panels, Intex SWCG (copper bars removed), and Borates. Also a Rubadub hot tub and a UDS (Ugly Drum Smoker) poolside.
If your water has you worried, do an Overnight Chlorine Loss Test (OCLT), and if you fail, then follow the Shocking Process until:
1. CC is less than 0.5 ppm, 2. An OCLT shows a loss of 1.0 ppm or less and, 3. The water is crystal clear.
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 Post subject: Re: Possible bad R-0003 reagent?
PostPosted: August 29th, 2011, 10:12 am 
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Joined: July 28th, 2008, 11:39 pm
Posts: 46
It is clear as water, colorless.



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 Post subject: Re: Possible bad R-0003 reagent?
PostPosted: August 29th, 2011, 10:16 am 
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Joined: May 23rd, 2007, 12:42 pm
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Location: Montreal Canada
What's the lot number? It's on the bottle, format looks like 1081A.


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 Post subject: Re: Possible bad R-0003 reagent?
PostPosted: August 29th, 2011, 10:20 am 
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Joined: July 28th, 2008, 11:39 pm
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Lot 2071A



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 Post subject: Re: Possible bad R-0003 reagent?
PostPosted: August 29th, 2011, 10:37 am 
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Joined: May 23rd, 2007, 12:42 pm
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Location: Montreal Canada
Should still be usable.


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