$11.99
These student grade flasks are great for yeast culturing and are made from borosilicate type glass which can be transferred directly from heat to ice and not crack like normal glass. Note: The use of an electric element is not recommend. If this can’t be avoided, it is recommend to use a larger pot as a hot water bath on the stove.
If heating… the Double Boiler Method is the recommended process for flask use: For your safety, it is important to heat liquid in the flask with a heat source that distributes heat evenly. The manufacturer for these flasks has confirmed that direct heat to the glass can break down its integrity and break if the heat is distributed evenly.
The Double Boiler Method process is using a boiling water bath on the outside of the flask to heat up the water inside the flask. All you need is a 3 gallon kettle (or larger). This process is much safer and efficient. If the flask were to break or boil over, the kettle is there to prevent not only a mess, but will also keep you safe.
These flasks are “Student Grade”. Student grade is not the highest grade flask and may have minor defects which will not have an effect on yeast starters or cultures.
6 in stock
