Chicago Albumem/Kentmere Printing Out Paper

Hello,
I am new on here, so thanks for having me.

We are tidying up my Mum's cellar and have found a box of Printing out paper.
It must be at least 15 years old as I got it from where I previously worked.

Can anyone suggest an easy way to test and gauge the state of the paper.

Any Help appreciated

One very easy way would be to expose a sheet per the directions. It’s not complicated at all. If the image is good then your a very lucky person.

Thanks very much,
I will have a go when the sun comes out!