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Old 11-20-2012, 03:04 PM   #1
Richard-SSV
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Oct 2009
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I'm venturing into doing a yeast starter for the first time and could use some suggestions on where to find a good flask.

The flasks on NB don't have the best reviews, as most reviewers say they are too thin and break easily. Are some flasks made thicker than others or are they pretty much all the same?

I'm doing 5 gallon all grain full boil batches. I don't foresee brewing anything larger than a 5 gallon batch, so will a 1000ml flask suffice or should I be looking for a 2000ml?

Thanks!

 
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Old 11-20-2012, 03:21 PM   #2
PeckerWood
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I bought my first Erlenmeyer flask at my LHBS and bought the same second one from homebrewing.org along with a magnetic stir plate. They are great quality and I've had no issues with them. If you plan on boiling the starter inside the flask, I'd defineltly go with the 2000ml one because they boil over easily due to the shape. Also with yeast propagation, especially in a stir plate, you tend to have high kraussen that could very possibly blow off your air lock. It's good to have some extra headspace in my experience.
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Old 11-20-2012, 03:24 PM   #3
cooper
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I bought a 2000ml one from the LHBS and it works great. I usually make a bigger starter so I get a blow off most of the time. I just wait for that to subside before I put it on the stir plate.

 
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Old 11-20-2012, 03:25 PM   #4
Richard-SSV
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Thanks for the info. Yes, I will be using a stir plate, but I have an electric stove, so I wont be boiling in the flask. I guess it would be a good idea to go ahead and get the 2000 ml then.

I've been to 2 LHBS's in my area and have struck out with the flask and stir bar. I guess I'm gonna have to buy online.

 
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Old 11-20-2012, 03:27 PM   #5
Lurch69
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Mar 2011
Ft Worth, TX
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These 2L flasks go on sale once in a while for ~$14: http://www.amazon.com/dp/B005QDP82Q/ref=biss_dp_t_asn. I picked one up a few months ago and it's worked great.

 
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Old 11-20-2012, 03:32 PM   #6
bobbrews
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Jan 2011
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You'll want a 2000ml flask minimum. The 1000ml flasks can overflow quite easily with yeasty foam when even a 500-600 ml starter is active or is shaken.

Regarding NB's flask quality, I came home one day and noticed my 1000ml flask (with an active starter in it) had a slight break at the base. It was held together and not leaking, but it shouldn't have happened since it was never dropped or slammed.

Anyway, I called NB and asked for a replacement, but I wanted to pay for the difference to get get a 2L flask in place of the broken 1L. They said, oh no don't worry about it, we'll send you the 2L flask for free. Never had a problem since with it and it has been 2 years. And I loved NB for going out of there way for me.

 
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Old 11-20-2012, 03:50 PM   #7
william_shakes_beer
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2l
borasilicate
don't boil in it. Heat and cool in a sauce pan, innoculate and then pour into the flask.

 
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Old 11-20-2012, 03:55 PM   #8
SpeedYellow
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Nov 2007
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Definitely don't waste your money on a 1L flask. Run the numbers on yeastcalc and you'll see that making a starter is practically pointless until you're near 1L or so. So you'll always be using the 2L.

What's wrong with boiling in the flask? That's all I've ever done, and haven't had any issues.

 
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Old 11-20-2012, 06:02 PM   #9
beergolf
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Quote:
What's wrong with boiling in the flask? That's all I've ever done, and haven't had any issues.
The OP mentioned that he has an electric stove. You cannot boil a flask on an electric stove.

Read this thread http://www.homebrewtalk.com/f163/exp...-flask-367595/

Definitely don't bother with the 1000ml flask and get the 2000.

 
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Old 11-20-2012, 06:29 PM   #10
SpeedYellow
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Ah, ok. I only use gas, and didn't know about the electric stove issue.

 
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