How to Calibrate and use the pH Meter?

How to conduct calibration of a #pH #meter?
(Mettler-Toledo S220)

Good pH Practice:

1. Always calibrate your sensor before the start of measurement
2. Do no resue buffer solutions
3. Discard opened solution after 6 months
4. Allow sensors to equilibrate with the environment before each measurement
5. Wait for reading stabilized icon to appear before recording the measurement
6. Recharge or replace sensor when
- Calibration slope falls within 85%-89%
- Offset value more than 35mV
- Slow response time during pH measurement and calibration
7. Ony store sensor in 3.0M KCl
8. Do not wipe sensor in harsh motion
9. NEVER store sensor in deionized water

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Here in this video, we have an expert who guide you the good way with the IPOV (Instructor's point of view) technique.

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[d.deepak]

great explanation, got my pH meter calibrated with your help. Thanks

[jhogan]

Interesti9ng how they do things in different countries. I always learn something New. Hello from the USA!

[guncix]

When you take the KCl conditioning vial of the pH probe, you have to hold the clear vial part and twist the white part anti-clockwise, therefore the vile will be gently released. When you finish analysis put it back on and twist it clockwise direction to seal it.

[afzalshahbaz]

at 2:05 you don't have to pull out the probe from the 3M KCL soaking tube. Simply rotate the upper flexible screw of the soaking tube and the probe will come out itself without any forced rotation of the soaking tube from the bottom. Else it may damage the probe bulb in process.

[chemfunman]

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[pavadaiarumugam]

Very clear explanation. Thank you so much sir

[thembelangxokile]

it would be helpful though if you told us why we do certain things like taking steps to remove the bubbles

[matchmedicines]

thanks a lot, it was amazing.
just a question, how I can prepare the buffers (4, 9, and 7)?

[xavik]

Thanks! I already missed these videos.

[yasiralshebib]

Hi Dr Fun
thanks for the education video.
I'd like to ask you about: (#good safety habit), is it just a hashtag on twitter or there is a youtube video channel dedicated to safety habits videos?

thanks in advance

[Sp-feeo]

thanks for the video...it's really useful

[jomarcamu]

Seriously do you think you did it right? You calibrated your instrument by standard buffer 4.01, followed by 9.21 and finally by 7.00. And after calibration you pressed exit button without even pressing END button hence not saving your calibration into your instrument. Consequently no slope can be displayed by your instrument since you didn't even ended your calibration and saved it. Correct me if I am wrong if you disagree.

[MaestroAssistant]

I think you can rotate white plastic top to unscrew it from the KCl container

[alial-absawi]

Hello
I hope you are doing well
May I ask that why u didn't press End after that Save
Also I have problem with my ph meter which one of the puffer always can not be celebrated

[ZeMagnifier]

Won't we risk contaminating the buffer solutions if we were to directly dip the proble into the buffer solution storage?

[lydiaamelia]

Great and clear explanation, i love that, but I have a question, what we have to do if the pH meter measure wrongly or inaccurate when calibrating the buffer solution, like when the actual pH value of the buffer is 4.01 but the pH meter show the value of 4.51 then what should we do?

[longho]

when i select Menu structure of pH/ion, the display only show two mode 1 Sensor ID/ IM and 2 Calibration Setting. I choose mode 2 but the machine don't show mode Buffer Group/ Standard. On the other hand, at the main display, the machine in Router mode, i can't calibration the group buffer 4, 7, 9.21 because this machine mesure not exactly. Can you help me the method to this machine return as originally, when i press menu structure of pH/ion have 7 mode. Thank you!!

[bouallalahalima]

Thank's but I have a problem when l calibration read only one calibration 1 don't read calibration 2

[shanrao]

What type of error gave the PH meter to find out PH..?

[uartim]

Do you need a buffer with higher pH value for solution to be measured at a higher pH ?