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Re: [ATM] Does exposed Pyrex lose polish over time?

Bob May wrote:

>Theory says yes but reality is no for glasses like pyrex.  It will take a
>very long time to make the corrosion of pyrex to be visible to the eye.
>  
>
Besides you can always put it in a tester and check the figure.  If 
there is significant degradation, you would probably see it under a 
Foucault test with a narrow slit.  If you can't see it, it probably 
doesn't matter.

Jeff

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