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German Brewing The German Brewing Forum Welcomes You 2016-07-26T05:51:43-05:00 http://forum.germanbrewing.net/feed.php?f=16&t=371 2016-07-26T05:51:43-05:00 2016-07-26T05:51:43-05:00 http://forum.germanbrewing.net/viewtopic.php?t=371&p=4795#p4795 <![CDATA[Re: DO Meter Questions]]> Statistics: Posted by HopSteady — Tue Jul 26, 2016 6:51 am

]]> 2016-07-04T08:19:26-05:00 2016-07-04T08:19:26-05:00 http://forum.germanbrewing.net/viewtopic.php?t=371&p=4372#p4372 <![CDATA[Re: DO Meter Questions]]> .

Statistics: Posted by Owenbräu — Mon Jul 04, 2016 9:19 am

]]> 2016-07-03T02:40:51-05:00 2016-07-03T02:40:51-05:00 http://forum.germanbrewing.net/viewtopic.php?t=371&p=4325#p4325 <![CDATA[Re: DO Meter Questions]]>
Looking into a DO meter to get started. I know that you guys mostly went with the extech. This seems to be a polarographic meter with accuracy to .4ppm. I did some reading at http://www.fondriest.com/environmental- ... d-methods/.

The accuracy has been discussed above, but I am wondering about the constant stirring thing. From above: "If measurements are being done in a lab or still water, it is necessary to stir galvanic and polarographic DO sensors in solution. This measurement method is dependent on flow due to the consumption of the oxygen molecules 7. When the oxygen is consumed, the sensors can produce an artificially low DO reading in no-flow situations 7. Electrochemical dissolved oxygen sensors should be stirred in the sample until the dissolved oxygen readings no longer increase."

Also this. "When the instrument is turned on, it requires a 5-60 minute warm-up period to polarize the electrodes before calibrating or measuring." (from above link.)

I like accurate reliable measurements. A lot. I would pay more for a better meter, say up to $600.
I've seen this http://hannainst.com/products/benchtop- ... ge-do.html, it is also polarographic, but accuracy is .01ppm (am i reading this right?)
I also saw hach (a compay i love) has http://www.hach.com/hq30d-portable-mete ... 7640513820, but i need to call for a price.

Any thoughts?

Statistics: Posted by ephraim.greenblatt — Sun Jul 03, 2016 3:40 am

]]> 2016-06-02T12:08:32-05:00 2016-06-02T12:08:32-05:00 http://forum.germanbrewing.net/viewtopic.php?t=371&p=3671#p3671 <![CDATA[Re: DO Meter Questions]]> Is hefty though. There is an interesting thread on pro-Brewer where Mitch Steele asked about recommendations for a decent
DO probe....

Statistics: Posted by Weizenberg — Thu Jun 02, 2016 1:08 pm

]]> 2016-05-26T14:06:14-05:00 2016-05-26T14:06:14-05:00 http://forum.germanbrewing.net/viewtopic.php?t=371&p=3571#p3571 <![CDATA[Re: RE: Re: DO Meter Questions]]> Statistics: Posted by bensonledbetter — Thu May 26, 2016 3:06 pm

]]> 2016-05-26T13:48:10-05:00 2016-05-26T13:48:10-05:00 http://forum.germanbrewing.net/viewtopic.php?t=371&p=3568#p3568 <![CDATA[Re: DO Meter Questions]]> Statistics: Posted by Brandon — Thu May 26, 2016 2:48 pm

]]> 2016-05-26T13:40:13-05:00 2016-05-26T13:40:13-05:00 http://forum.germanbrewing.net/viewtopic.php?t=371&p=3567#p3567 <![CDATA[Re: DO Meter Questions]]> Statistics: Posted by bensonledbetter — Thu May 26, 2016 2:40 pm

]]> 2016-05-23T06:56:01-05:00 2016-05-23T06:56:01-05:00 http://forum.germanbrewing.net/viewtopic.php?t=371&p=3403#p3403 <![CDATA[Re: DO Meter Questions]]> Statistics: Posted by Bryan R — Mon May 23, 2016 7:56 am

]]> 2016-05-20T07:43:36-05:00 2016-05-20T07:43:36-05:00 http://forum.germanbrewing.net/viewtopic.php?t=371&p=3354#p3354 <![CDATA[Re: DO Meter Questions]]> Statistics: Posted by Brandon — Fri May 20, 2016 8:43 am

]]> 2016-05-19T21:36:55-05:00 2016-05-19T21:36:55-05:00 http://forum.germanbrewing.net/viewtopic.php?t=371&p=3352#p3352 <![CDATA[Re: DO Meter Questions]]> Statistics: Posted by ajk — Thu May 19, 2016 10:36 pm

]]> 2016-05-19T21:35:54-05:00 2016-05-19T21:35:54-05:00 http://forum.germanbrewing.net/viewtopic.php?t=371&p=3351#p3351 <![CDATA[Re: DO Meter Questions]]> Statistics: Posted by ajk — Thu May 19, 2016 10:35 pm

]]> 2016-05-19T21:15:31-05:00 2016-05-19T21:15:31-05:00 http://forum.germanbrewing.net/viewtopic.php?t=371&p=3350#p3350 <![CDATA[Re: DO Meter Questions]]> Statistics: Posted by Bryan R — Thu May 19, 2016 10:15 pm

]]> 2016-05-19T21:08:17-05:00 2016-05-19T21:08:17-05:00 http://forum.germanbrewing.net/viewtopic.php?t=371&p=3349#p3349 <![CDATA[Re: DO Meter Questions]]> Statistics: Posted by ajk — Thu May 19, 2016 10:08 pm

]]> 2016-05-19T15:00:44-05:00 2016-05-19T15:00:44-05:00 http://forum.germanbrewing.net/viewtopic.php?t=371&p=3338#p3338 <![CDATA[Re: DO Meter Questions]]> Statistics: Posted by Weizenberg — Thu May 19, 2016 4:00 pm

]]> 2016-05-16T20:20:26-05:00 2016-05-16T20:20:26-05:00 http://forum.germanbrewing.net/viewtopic.php?t=371&p=3235#p3235 <![CDATA[Re: DO Meter Questions]]> Statistics: Posted by Bryan R — Mon May 16, 2016 9:20 pm

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