Hi everyone

Based on my understanding, pyrex 7740 and borofloat
are borosilicate glass which has the same compound
composition. However when I used them, I feel like
there are something different in term of either
microscopic and macroscopic point of view.
I would like to know if someone has information about
difference between pyrex 7740 and borofloat in term of
macroscopic and microscopic point of view.

Thanks.

Onnop

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