[timberati]

Is it safe to boil my DME in the borosilicate flask on my electric stove's ceramic cooktop? I'm guessing so given the directions which say that after a 15 minute boil to place it in an ice bath to cool. sounds like pretty tough stuff.

[ryang]

yes

[theDarkSide]

I've been doing it for the past 3-4 years with no problems.

[ckpash88]

I have a normal electric range with the coil heating elements not a glass top can I boil in the glass on top of my stove.

[ckpash88]

Would I have to use a heat diffuser? B I have heard if you put the flask on a traditional electric stove top u can crak them

[positiverpr]

you can crack them - twice if your me.

[denny]

you can crack them - twice if your me.

Only once for me, but that mess was enough to convince me to boil in a pot, then xfer to a flask.

[timberati]

Thanks, all.

[dcbc]

Just reading this thread, the answers seem to vary.  Is it safe to say that:

Flask of boiling wort on traditional coiled electric element = bad.

Flask of boiling wort on a ceramic cook top with electric element underneath = no problem.

[paul]

I have a ceramic cooktop and wouldn't exactly say "no problem."  Make sure you have a nucleation point for the boiling to occur, such as a stir bar or some sort of stir rod touching the bottom.

Without a nucleation site, superheated liquid can build up at the bottom, setting up a rather unstable situation.  A slight bump can cause all of the superheated liquid to vaporize in an instant, causing a hot-wort volcano. 

How do I know this?  Well, you may be able to guess. 

[tubercle]

Use that little wheel thingy on your mouse and scroll up to re-read Denny's post.

And I quote:"...but that mess was enough to convince me..."
 

 

[dcbc]

Use that little wheel thingy on your mouse and scroll up to re-read Denny's post.

And I quote:"...but that mess was enough to convince me..."
 

 

Right, but the topic had already shifted to traditional coils at that point.  So I didn't know if Denny had tried it on ceramic or not. 

I'll probably stick to boiling in a pot and transferring, but wanted to be sure.

If I do try it, I'll leave the stir bar in there as a nucleation site.

[denny]

Use that little wheel thingy on your mouse and scroll up to re-read Denny's post.

And I quote:"...but that mess was enough to convince me..."
 

 

Right, but the topic had already shifted to traditional coils at that point.  So I didn't know if Denny had tried it on ceramic or not. 

I'll probably stick to boiling in a pot and transferring, but wanted to be sure.

If I do try it, I'll leave the stir bar in there as a nucleation site.

Yep...flat top ceramic.  Took me hours to scrape off the burned on sugar.

[dcbc]

Yet another thing Barkeepers friend is great for cleaning - ceramic cook tops.

[hopfenundmalz]

A friend has the lab stand, the clamp to hold the neck of the flask, and a bunsen burner.

That is the what they are designed for, no?