Unable to calibrate

Please specify which model of the SevenMulti you are referring to.

Best Regards,
Kylie

Hi Kylie,

The model is SevenMulti Neutral Meter S40.

Thanks,

Katie

Do you get a reading when the electrode is placed in the buffer normally i.e. not trying to calibrate?

Sarah

Hi Sarah,

I get no readings with buffer 7 and 4. I get 3 lines.

Thanks,

Katie

Hi Katie,

I spoke with our Technical Support Team and Michael answers:  

What is the model and serial number of the pH electrode? Perform the mV measurements below.

Using pH buffers 4, 7 and/or 10, make a note of the readings and compare the values to the following:

Buffer   mV .

4              180 ±20

7              0.0 ±20

10           -180 ±20

I hope this helps a little and I'm happy to ask Michael more if you have the model and serial number of the pH elecrode.  His email address is also uslabtechsupport@mt.com.  Thank you, Jennifer

Hi Jennifer,

The model number of the probe is Meetler Toledo Inlab Epert Pro-ISM and the number on the cable is 3440397. I have read the following,

Buffer mV .

4     180 ±20  My reading was 2000mV and then cut out to 3 broken lines

7     0.0 ±20  My reading was -840.6mV

Thanks,

Katie

Hi Katie,

Michael replied and said that it is a dead electrode from 2013 and  unfortunately, you will need to replace.

Thank you,

Jennifer