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''Disadvantages'':
* Despite having an automatic calibration message, this pH meter still often needs to be calibrated before each brew day <ref name="ajdelange"></ref>.
* Interface isn't intuitive, and the The buttons have been reported to be touchy by some.
* Poor instructions that come with the unit. Use [http://www.hach.com/asset-get.download.jsa?id=18952100085 the website manual] instead of the instructions that come with it.