5000 mL
This conical flask made of borosilicate glass is the perfect container for making yeast starters and cultures. The flask requires an appropriately sized stopper (usually a # 11.5) and an airlock. If you do not have those items, you can add them to your flask below.

This product is sold for the sole purpose of culturing yeast for Beer, Wine, Mead, and Sake.

California Proposition 65

Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.