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====[http://www.hach.com/pocket-pro-ph-tester-with-replaceable-sensor/product?id=17990686211 Hach Pocket Pro+ pH Tester with Replaceable Sensor].====
''Features'':
* This pH meter is recommended by AJ Delange <ref name="ajdelange"></ref><ref>[http://www.homebrewtalk.com/showpost.php?p=5711057&postcount=33 Testing the Hach Pocket Pro+ by AJ Delange Homebrewtalk. Retrieved 04/18/2015.]</ref>.
* Does not require storage solution (there is an o-ring seal on the cap, which only needs to have a few drops of distilled water in it).
* Replaceable sensor.