Erlenmeyer Flask - 500 mL

Erlenmeyer Flask - 500 mL

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All of our flasks are made from borosilicate type glass which is nice because they can be transferred directly from heat to ice and not crack like normal glass. (We do not recommend the use of an electric element. If this cannot be avoided, we recommend using a larger pot as a hot water bath on the stove.)

Great Flask for yeast culturing.

Recommended Process for Use of Flask:
Double Boiler Method

It is important for your safety to heat water in the flask with a heat source that distributes heat evenly. Our manufacturer has confirmed that direct heat to the glass can break down its integrity and break if the heat source doesn't distribute evenly.

Morebeer! recommends using the "double boiler method."  This process involves using a boiling water bath on the outside of the flask to heat up the water inside the flask.  All you need is a kettle 3 gallons or larger.  This process is much safer and efficient. If the flask should break or boil over, your kettle will be there to collect the contents, thus keeping your stove clean and keeping you away from potential harm.  

In the lab world, these flasks are known as "Student Grade". A great flask for making yeast starters! (Student grade is not the highest grade flask and will have minor defects)

Kegland Part Number: KL03964

Item # Y410
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 0.50 LBS
Community Q&A

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i had a plastic one that melted
jordan o on Dec 20, 2022
To store an overbuilt starter in fridge
Chris S on Jul 15, 2021
i had a plastic one that melted
jordan o on Dec 20, 2022
William M l on Jul 19, 2022
To store an overbuilt starter in fridge
Chris S on Jul 15, 2021
Good for mixing
Andrew L on Jan 9, 2021
Gary A on Jan 6, 2021
Yeast starter
TC S on Nov 4, 2020
Yeast Starter
Elizabeth G on Oct 7, 2020
Krista H on Jan 29, 2020
force ferment
Ryan Z on Jan 3, 2020
yeast hydration
Chris D on Nov 18, 2019
Build up Brett bottle dregs to use for a secondary.
Michael Hoccom on Feb 28, 2018
Because I wanted the item.
Joshua S on Feb 24, 2018
William M l on Jul 19, 2022
Good for mixing
Andrew L on Jan 9, 2021

5.0 / 5.0
6 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Good value!
Perfect for pitching yeast!
August 6, 2018
over 5 years ago
Rated 5 out of 5
Big flask for going big time
This flask is so big it looks cartoony. It works well and didn't explode when I put it directly on an open flame on my stove, and again when I put it directly in an ice bath for cooling. Recommended!
May 7, 2018
over 6 years ago
Rated 5 out of 5
Rehydrate dry yeast or grow up starters
I use these as a second or third step when growing up yeast from plates or slants and also to rehydrate dry yeast. To do so, I fill it halfway with wort or water (for growing or rehydrating yeast respectively), add a stir bar, cover it with foil and then cook it in my pressure cooker. That way I have sterile wort or water when I need it for yeast handling.

I also sometimes use these on the stove and haven't had a problem yet. The glass is pretty thick and durable, although I don't recommend putting it directly in cold water from the stove.

It came well packaged in bubble wrap, so it should arrive safely.
May 18, 2014
Rated 5 out of 5
Handy Container
This is a handy size and quality flask for a variety of yeast handling tasks.
May 31, 2013
Rated 5 out of 5
sturdy container! does it all.
just don't put it on the stove, don't think it is rated for that. i use it for stepping up starters and it is great.
May 30, 2013
Rated 5 out of 5
Nice size
This is a nice item when your doing starters. I use it to step up my starters. It's sturdy. I also like to use it during slanting to hold sanitizer which I put my inoculating loop in. Multitude of uses.
May 12, 2013