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Unread 01/06/2010, 08:28 AM   #21
spleify
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Join Date: Dec 2003
Location: Denver, Colorado
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Quote:
Originally Posted by arrowheadpuffer View Post
I calibrate with RO, tried the 35ppt and the reading was true calibrated with RO...

Calibrating with RO water will NOT give you true accurate readings at the level we are testing. Please do not do this and think you are getting accurate results.


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