[PorkTrousers]

What are some good easy to find materials to use as boiling chips? I read that if you ever break a borisilicate flask or beaker to use the broken piece of glass as boiling chips. In that case could any old broken glass pieces be used? I know regular glass breaks when it gets too hot but I can't imagine small glass fragments breaking.

Would that work? Could I break a beer bottle and use the glass fragments as boiling stones?

[enahs]

It would be fairly safe (boiling wise) to use any household glass chips. You will of course have the danger of sharp edges.

A better choice would be broken chips from ceramics.


But not all glasses and ceramics are equally non-reactive.

[Mitch]

Just go in the back yard and find some rocks. Clean thoroughly and just run with it.

[PorkTrousers]

I don't have a back yard but I just broke a plate and used the fragments. They worked well too.