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Does the Stylus Cleaner ever go bad? -S.

I have a bottle of Stylus Cleaner (black top with brush attached) that I’ve been using for about 10 years and I still have a good amount left. I was wondering if it ever expires?

Thanks, S.

The answer is multiple decades.  We have samples from the first production run in 1979.  There have been changes in the carrier/diluent, but the critical functional components have stayed the same.

Best regards, Walt