How long does 50X TAE last?

I'm curious, how long can we expect a 50X TAE solution to remain viable for use? Is there a shelf life that we should be aware of, or does it depend on specific storage conditions? Additionally, what factors might impact its longevity, and are there any best practices for ensuring it stays fresh and effective for as long as possible? It would be great to get a clear understanding of how to manage this aspect of our lab work.