In article >,
"john south" > writes:
> After preparing and partially boiling vegetables and meat, they were then
> put in a large glass bowl and it was placed on top of a gas hob to bring
> them to
> the boil. That was prior to placing it in the oven to make an oven
> casserole.
>
> This practice has been done by me quite a few times before. I've always
> assumed that a Pyrex bowl can be placed on a gas ring and the contents
> boiled, because someone I know has Pyrex glass saucepans, that they use to
> boil things in.

Pyrex doesn't imply a particular type of glass. Originally it was
borosilicate glass, but it's now just used as a well-known trade
name to sell various different types of glass. Different companies
use the name differently in different parts of the world.

Borosilicate glass tends to be used for higher temperature applications,
although I don't know what glass saucepans are made of.

Even soda-lime glass (used for most glass applications) shouldn't melt
in an ordinary domestic oven. Sometimes it's toughened - did it break
like a toughened windscreen shattering?

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]