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I can't see why it would go bad. It is just deionized water and polymers. I would think it would evaporate before anything. Just shake it before using, I did that and just purchased it recently.
Sorry, there was a problem. Please try again later.how many years? i had monster screen clean bottle for ten years, no problem. trusting audioquest , no problem. any serious concerns i would contact the audioquest, that is my advice if you have a very very serious concern
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