Using expired calibration fluid?

[cvrle1]

I have purchased 3 pack of Milwaukee M10080 TDS Calibration Fluid, and 1 of the 3 packs that came expired in April 2019. I will get partial refund for it, but want to know if calibration fluid is still good to use, or should I toss this one packet?

Thanks for the help.

 

[hkgar]

How important is an accurate reading to you? Expiration dates are generally set conservatively so as to protect the company. It is a risk but probably good.

 

[cvrle1]

How important is an accurate reading to you? Expiration dates are generally set conservatively so as to protect the company. It is a risk but probably good.

It's all about accurate reading I would say for this one at least. I do have 2 more packets that were shipped with expiration date of 2023, but wanted to check if this was similar to putting expiration date on table salt sort of a thing. Thanks.

 

[Oldreeferman]

Why not just test it against the other ones i mean if it reads the same then there is your answer. Why not?

 

[mcgyvr]

Its either good...or its not. only through comparison can you know which one...

I can't imagine how a sealed tds solution could go bad though...