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Hilton
 Post subject: frozen reagents
PostPosted: January 18th, 2012, 11:30 am 
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Joined: June 15th, 2010, 12:31 am
Posts: 50
I accidentally allowed some reagent bottles to partially freeze. Among those frozen are a nearly empty bottle of R-0004-E which I won't cry over, half a bottle of R-0871-E, 3L of R-0013(G), and possibly a couple of R-0009-C's (didn't actually check them). Nothing froze completely, and they are being thawed slowly at a cool room temperature (still have an iceberg in them after a full day).

Are they still any good after being partially frozen?



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X-PertPool
 Post subject: Re: frozen reagents
PostPosted: January 18th, 2012, 12:07 pm 
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Joined: June 12th, 2009, 10:35 pm
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Location: Exeter, PA
you probably should toss them, but I find that sunlight exposure kills reagents more so than temp. You could always compare your results with another test kit (maybe a neighbor or a pool store?)



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Hilton
 Post subject: Re: frozen reagents
PostPosted: January 18th, 2012, 2:01 pm 
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These are refill bottles for my nine test kits around town. I guess I can find clean empty bottles and test them...good idea.
Will report!



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Melt In The Sun
 Post subject: Re: frozen reagents
PostPosted: January 18th, 2012, 2:16 pm 
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Please do!!



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JamesW
 Post subject: Re: frozen reagents
PostPosted: January 18th, 2012, 2:30 pm 
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Joined: March 2nd, 2011, 8:02 pm
Posts: 1611
Quote:
Any liquid that has frozen
A liquid reagent may still be effective after freezing. Allow it to thaw at room temperature. If the bottle cracks, if you see a crusty buildup around the dropper tip, or if there are floating particles that do not dissolve when the bottle is shaken, replace the reagent.
http://taylortechnologies.com/product_f ... fe_web.pdf

http://www.taylortechnologies.com/Chemi ... ontentID=2
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