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Oh, Shit, I've never had it up that freakin high!!
It just makes that claim in the manual.

I do test steadily at 13 to 14pH though.

My new meter is a digital pH meter & thermometer in one unit, so when I calibrate it, I heat the buffer solution in a heat bath, to around 130-140 degrees. That way the pH meter is calibrated closer to where it will be used.
I still use the 10pH buffer solution for calibration. The bottle has the decimal point differences in the buffer solution at different temp's printed on the side too.
BTW, sense I'm heating it, I pour just enough solution for the calibration, from the large bottle I have, into a small 50ml flask. I only heat & use that. When I'm finished it gets disposed of.

It did cost way too mush $$ but I figured I was not going to stop doing these extractions anytime soon, so it was worth spending the extra money.
Thats how I rationalized it to myself anyway!

Worth every penny!!

WS

<blockquote data-quote="WSaged" data-source="post: 3224291" data-attributes="member: 370">Oh, Shit, I&#039;ve never had it up that freakin high!!It just makes that claim in the manual.I do test steadily at 13 to 14pH though.My new meter is a digital pH meter &amp; thermometer in one unit, so when I calibrate it, I heat the buffer solution in a heat bath, to around 130-140 degrees. That way the pH meter is calibrated closer to where it will be used.&nbsp; I still use the 10pH buffer solution for calibration.&nbsp; The bottle has the decimal point differences in the buffer solution at different temp&#039;s printed on the side too.&nbsp; BTW, sense I&#039;m heating it, I pour just enough solution for the calibration, from the large bottle I have, into a small 50ml flask.&nbsp; I only heat &amp; use that.&nbsp; When I&#039;m finished it gets disposed of.It did cost way too mush $$ but I figured I was not going to stop doing these extractions anytime soon, so it was worth spending the extra money.Thats how I rationalized it to myself anyway!Worth every penny!!WS</blockquote>

[QUOTE="WSaged, post: 3224291, member: 370"] [i][b]Oh, Shit, I've never had it up that freakin high!![/b][/i] It just makes that claim in the manual. I do test steadily at 13 to 14pH though. My new meter is a digital pH meter & thermometer in one unit, so when I calibrate it, I heat the buffer solution in a heat bath, to around 130-140 degrees. That way the pH meter is calibrated closer to where it will be used. I still use the 10pH buffer solution for calibration. The bottle has the decimal point differences in the buffer solution at different temp's printed on the side too. BTW, sense I'm heating it, I pour just enough solution for the calibration, from the large bottle I have, into a small 50ml flask. I only heat & use that. When I'm finished it gets disposed of. It did cost way too mush $$ but I figured I was not going to stop doing these extractions anytime soon, so it was worth spending the extra money. [i]Thats how I rationalized it to myself anyway![/i] [i][b]Worth every penny!![/b][/i] WS [/QUOTE]