Try looking for Beckman Zeromatic model. Again the accuracy as someone mentioned is in the probe itself. Get your buffer solutions to calibrate and you're set.
When I was doing photo chemical analysis in the 80s under military spec requirements, we used Beckman pH meters as the standard. Lots of Beckman stuff on eBay cheap.
http://www.ebay.com/itm/Beckman-Zero...item3cba92e07b
And, in best practice you leave them running all the time with the probe in a proper buffer solution.
08-18-2012 11:18 AM
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Last edited by kreeger; 08-18-2012 at 11:23 AM. Click to view previous post history.
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