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→High End pH Meters
A '''pH Meter''' is not only considered by some to be an essential tool for all grain homebrewing and commercial brewing, but is also a very useful tool to have for making sour beer. For examples of when an accurate pH reading is useful in the sour brewing process, see the [[Mixed Fermentation]], [[Sour WortingWort Souring]], and [[Lactobacillus]] pages.
==Recommend pH Meters==
===High End pH Meters===
Higher end pH meters recommended by our members and others. "Benchtop" meters are generally higher end, and are good choices for professional brewers.
* [http://www.milwaukeeinst.com/site/products/products/martini-bench-meters/67-products-g-martini-bench-meters-g-mi150 Mi150 pH and temperature Laboratory Bench Meter] (runs about $250 US) <ref>[https://www.facebook.com/groups/MilkTheFunk/permalink/1058773210817559/?comment_id=1059095470785333&offset=0&total_comments=5&comment_tracking=%7B%22tn%22%3A%22R0%22%7D Conversation with Jonathan Newman from The Virginia Beer Company on Milk The Funk. 04/19/2015.]</ref>
* [http://www.denverinstrument.com/denverusa/electrochemistry/UltraBasic_benchtop_meters.php UltraBasic Benchtop Meters] (discontinued, but may find used at a good price) <ref>[https://www.facebook.com/groups/MilkTheFunk/permalink/1058773210817559/?comment_id=1060334447328102&offset=0&total_comments=9&comment_tracking=%7B%22tn%22%3A%22R1%22%7D Conversation with Brandon Jones of Embrace The Funk on Milk The Funk. 04/21/2015.]</ref>.
* [https://www.coleparmer.com/i/oakton-ph-6-handheld-meter-with-atc-probe-order-ph-probe-separately/3561320?PubID=UX&persist=true&ip=no&gclid=COjPoKPfiNMCFUpNfgodxOsLRA Oakton pH 6+ Handheld Meter with ATC Probe <ref>[https://docs.google.com/document/d/1IHYluAgIFvXYDHMO2WRYzwSSvNo8UtmT4hRYAA_DGpM/edit?usp=sharing Ryan Buxton. Milk The Funk Facebook group. 04/03/2017.]</ref>.]
* [https://www.thermofisher.com/order/catalog/product/STARA1210 Orion™ Star A121] with an [https://www.thermofisher.com/order/catalog/product/8156BNUWP Orion™ 8156BNUWP ROSS Ultra™], recommended by [https://www.facebook.com/groups/MilkTheFunk/permalink/2044032758958261/?comment_id=2044272178934319&comment_tracking=%7B%22tn%22%3A%22R%22%7D Shawn Savuto] (does not include ATC in this probe).
===Budget pH Meters===
* 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.
====[http://www.milwaukeetestersmilwaukeeinstruments.com/MW102.html site/products/products/standardportable-meters/81-products-g-standard-portable-meters-g-mw102 Milwaukee MW102 pH/Temp Meter (updated/upgraded from SM101 and MW101)].====
[[File:MW102.jpg|thumb|Milwaukee MW102]]
''Features'':
* 0.02+/- accuracy.
* Automatic temperature compensation.
''Disadvantages'':
* This pH meter usually needs to be calibrated before each brew day.
(This section in progress)
* [http://accidentalis.com/measuring-mash-ph-in-practice/ "Measuring Mash pH in Practice," by Matt Crispen (a good general guide to using a pH meter).]
* [https://www.morebeer.com/articles/understanding_ph_in_brewing "Understanding pH and It's Application in Small-Scale Brewing," by AJ Delange.]
* Carbonic acid can affect pH readings. If testing a beer that has CO2 in it, either residual from fermentation or from keg/bottle carbonation, let the beer warm to room temperature and swirl the beer to try and get all of the CO2 out of solution before taking a pH measumrement <ref>[https://www.facebook.com/groups/MilkTheFunk/permalink/1153226544705558/?comment_id=1153275738033972&reply_comment_id=1153651057996440&total_comments=5&comment_tracking=%7B%22tn%22%3A%22R%22%7D Conversation with Gareth Young on MTF. 09/23/2015.]</ref>.
==External Articles==
* [http://www.homebrewtalk.com/showthread.php?t=302256 AJ Delange's Guide on How to Calibrate and Use pH Meters for Homebrewers].
* [http://embracethefunk.com/ph-readings-of-commercial-beers/ pH Readings of Commercial Beers, Embrace the Funk Blog, Brandon Jones.]
* [http://bitesizebio.com/8750/how-to-care-for-your-ph-meter/ How to Care for Your pH Meter; BitesizeBio.]
* [https://sites.google.com/site/brunwater/water-knowledge "Water Knowledge" by Martin Brungard.]
==References==