do N20 bottles go bad?
But if your just using it on the street..you will likely never have to get it tested, If your worried about a bottle fauilure..check with the manufacturer to get the recommended test interval...or send it back to them for testing.
They x-ray the bottle and check for fiber frays, cracking and stress related problems before they become a major disaster.
I was more than happy to have my tank inspect, 4500 psi next to your chest is something you want to do as safely as you can.




