Author Topic: borosilicate flask and ceramic cooktops  (Read 2524 times)

Offline timberati

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borosilicate flask and ceramic cooktops
« on: January 20, 2012, 01:52:01 PM »
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.
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Offline ryang

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Re: borosilicate flask and ceramic cooktops
« Reply #1 on: January 20, 2012, 02:34:42 PM »
yes

Offline theDarkSide

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Re: borosilicate flask and ceramic cooktops
« Reply #2 on: January 20, 2012, 02:39:50 PM »
I've been doing it for the past 3-4 years with no problems.
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Offline ckpash88

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Re: borosilicate flask and ceramic cooktops
« Reply #3 on: January 20, 2012, 02:58:48 PM »
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.
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Offline ckpash88

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Re: borosilicate flask and ceramic cooktops
« Reply #4 on: January 20, 2012, 10:43:11 PM »
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
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Offline positiverpr

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Re: borosilicate flask and ceramic cooktops
« Reply #5 on: January 21, 2012, 09:11:59 AM »
you can crack them - twice if your me. ;)

Offline denny

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Re: borosilicate flask and ceramic cooktops
« Reply #6 on: January 21, 2012, 09:38:15 AM »
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.
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Offline timberati

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Re: borosilicate flask and ceramic cooktops
« Reply #7 on: January 23, 2012, 07:08:52 AM »
Thanks, all.
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Offline dcbc

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Re: borosilicate flask and ceramic cooktops
« Reply #8 on: January 24, 2012, 10:15:29 AM »
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.
I've consumed all of my home brew and still can't relax!  Now what!

Offline paul

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Re: borosilicate flask and ceramic cooktops
« Reply #9 on: January 24, 2012, 01:45:53 PM »
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.  :-\

Offline tubercle

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Re: borosilicate flask and ceramic cooktops
« Reply #10 on: January 24, 2012, 04:26:28 PM »
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..."
 

 
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Offline dcbc

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Re: borosilicate flask and ceramic cooktops
« Reply #11 on: January 25, 2012, 08:28:12 AM »
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.
I've consumed all of my home brew and still can't relax!  Now what!

Offline denny

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Re: borosilicate flask and ceramic cooktops
« Reply #12 on: January 25, 2012, 09:33:53 AM »
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.
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Offline dcbc

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Re: borosilicate flask and ceramic cooktops
« Reply #13 on: January 25, 2012, 03:17:09 PM »
Yet another thing Barkeepers friend is great for cleaning - ceramic cook tops.
I've consumed all of my home brew and still can't relax!  Now what!

Offline hopfenundmalz

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Re: borosilicate flask and ceramic cooktops
« Reply #14 on: January 25, 2012, 09:01:26 PM »
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?
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