Author Topic: How long for a pH reading?  (Read 528 times)

Offline blatz

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How long for a pH reading?
« on: March 05, 2016, 02:36:47 PM »
How long do you keep the probe in solution to get a reading?  Seems that it always moves even after being in solution for a LONG time.

I used to let it sit for about a minute and then call it good. 


What do you guys do?
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Offline flbrewer

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Re: How long for a pH reading?
« Reply #1 on: March 05, 2016, 02:38:01 PM »
Mine seems to take quite a while to stabilize. You also get a notification when it's done I believe.

Offline blatz

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Re: How long for a pH reading?
« Reply #2 on: March 05, 2016, 02:39:44 PM »
Mine has no notification that I am aware of
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Offline ajk

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Re: How long for a pH reading?
« Reply #3 on: March 05, 2016, 04:15:28 PM »

I used to let it sit for about a minute and then call it good. 


What do you guys do?
That's what I do. It usually only moves by 0.1, if at all, for me.

Offline Wort-H.O.G.

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Re: How long for a pH reading?
« Reply #4 on: March 05, 2016, 04:18:19 PM »
yep solid minute here. too much longer to get stable reading tells me i need to clean that probe with cleaning solution soak.
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Offline blatz

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Re: How long for a pH reading?
« Reply #5 on: March 05, 2016, 04:46:12 PM »
Gotcha.  Storage solution or is that different?
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Offline Wort-H.O.G.

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Re: How long for a pH reading?
« Reply #6 on: March 05, 2016, 04:54:45 PM »
Gotcha.  Storage solution or is that different?

cleaning is more acidic than storage.
Ken- Chagrin Falls, OH
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Offline brewinhard

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Re: How long for a pH reading?
« Reply #7 on: March 05, 2016, 08:55:30 PM »
I swirl mine around in my wort sample and it can take up to a minute or so to stop moving.  Once it stops, it pretty much stays at that reading for me.  YMMV.

Offline neddles

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Re: How long for a pH reading?
« Reply #8 on: March 05, 2016, 08:58:32 PM »
I give mine a good 4-5 minutes. I cool it quickly and have been assuming the delay in stabilization is the result of the actual pH change that occurs with the temperature change from ~150F to 68F.

Offline jthaworth

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Re: How long for a pH reading?
« Reply #9 on: March 05, 2016, 10:41:25 PM »
I let mine sit in the fluid until the numbers resolve around a number.  The accuracy is +/- 0.2, so as-long as its not changing beyond this, I assume the reading is good.  It has a resolution of 0.01, for that last digit may never settle.  During measuring, I will always have a glass of RO water to sit it in between measurements.  Once done, then I use cleaning solution and store it in the buffer-storage solution.