How long does Final Rinse Concentrate Last?

I have kodak chemistry - how long do the concentrates last and what's the best way to store each concentrate?

Please answer and clarify if you're referring to LORR or SM etc. (I use a mixture of them but would love to learn about each)

There should be an expiry date on the bottle label.
In an unopened bottle, a rule of thumb would be 2 years max after the expiry date.

Have a look here, it has all the info you need about Flexicolor chemicals.
https://imaging.kodakalaris.com/sites/uat/files/wysiwyg/pro/chemistry/z131.pdf