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Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Flask or Beaker
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Old 04-30-2013, 08:53 PM   #1
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Default Flask or Beaker

I broke my 3L Erlenmeyer Flask, just barely clinked it against my 1 Liter Erlenmeyer and cracked it.

Now I need a new one for my starters.

I'm thinking 4000 ml makes more sense, a little extra room to avoid boil overs.

Why would I not want to go with a 4000 ml Borosilicate Beaker?

I always just put aluminum foil over the top anyway while on the stir plate.

With the wide opening seems like it would be easier to control potential boil overs, and would be easier to fit in refrigerator (shorter).

Thanks

Chris

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Old 04-30-2013, 09:05 PM   #2
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Id use one if I didnt already have a large flask.

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Old 05-01-2013, 01:26 AM   #3
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That is where I'm coming from, I need to buy again.

Is there an advantage one over the other...

I can pick up a 4 pack off of Amazon for $103.50. If I split with another brewing friend $26/per.

Not a bad price.

Chris

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Old 05-01-2013, 01:30 AM   #4
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I've thought the same thing. A beaker makes a lot of sense. The only issue I see is the opening may be difficult to cover properly to keep out nasties. For boiling though I think it's a better option. Moving it may be an issue though.

I've switched to a 1.5L coffee pot recently and I love it. I haven't had a boil-over yet becase of the wide opening.

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Old 05-01-2013, 03:50 AM   #5
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I didn't know there was a difference either, I assumed that a beaker and flask were the same thing.

With my Erlenmeyer flask I would spray some starsan on a piece of aluminum foil and bend it around the neck.

I don't think doing the same with a beaker would pose any issue.

I think boil overs would be less likely with a beaker.

I don't see any downside, hence my post. Everyone seems to go with a flask, as I did.

I suppose if I used an airlock it would be an issue...

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Old 05-01-2013, 02:03 PM   #6
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I think you'd need these for picking it up and moving it. The shape of the beaker would make it pretty difficult to handle when hot.

http://www.sciencelabsupplies.com/Si...ker-Flask.html

I broke a 5000ml flask a few months back. Just barely bumped it and the whole side collapsed. It was only the second time I'd used it too. It's amazing how something that can stand up to hot/cold can be so fragile.

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Old 05-01-2013, 06:36 PM   #7
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If you have a stir plate a beaker is fine. If you're a swirler, a flask is much easier to swirl without sloshing out the top. In all the discussions I've read, flasks have the advantage in transportation and handling, but beakers are more size-efficient and have less risk of boil-over. If you can move your hot beaker without dropping it, go with that.

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Old 05-01-2013, 08:23 PM   #8
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if you use a stirplate, a vessel with a flat bottom for the stirbar works best. Beaker or flask in my mind is personal preference.

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Old 05-02-2013, 01:21 AM   #9
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Thanks all. I think I will go the beaker route this time around.

Chris

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Old 05-02-2013, 04:33 AM   #10
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Try to find the beaker in 'tall form'. Works much better on a stir plate with the smaller diameter in relation to height.

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