.If you have any questions, please let us know.

. Si vous avez des questions, n 'hésitez pas à nous le faire savoir.

Good morning!

Hi

I would be interested to know how long the expiry date of the calibration solutions is.
If I order now... PH7, PH9 and Redox 650mV

May 2024

Thanks very much!

my pleasure

another question ...
what happens to the liquid after the date has passed? Should these be disposed of in any case, or will they last longer if stored appropriately?

It can be used much longer than the expiration date. The most important thing is not to pollute it when you immerse the probe in it.

how do I know when the liquid is really no longer usable?
I currently have some at home with an expiry date of 2021 and 2022

It is impossible ! If you are sure you haven't soiled it, keep using it

Thank you for the honest information!

my pleasure