This is the thing that perplexed me to a long time. It turns out that pyrex isn't borosilicate in the states, but it is here in europe. I have a pyrex measurin

This is the thing that perplexed me to a long time. It turns out that pyrex isn't borosilicate in the states, but it is here in europe. I have a pyrex measuring jug that I've heat shocked loads of times and its still with me after ~18 years. However in the states I tried to use a pyrex just as I would at home, and the thing shattered. The perils of licensing your name out I suspect