500 mL Double Boiler Method Erlenmeyer Flask signature take a temp reading during

take a temp reading during cooling

and without the stir plate you'll need to pick up and swirl your starter by hand as often as possible

No additives or preservatives

the Tilt reduces the risk of infection and oxidation

Gluten Free

500 mL Double Boiler Method Erlenmeyer Flask signature take a temp reading duringAll 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