If you make yeast starters, our heat-resistant glass Erlenmeyer flasks are
perfect for preparing the starter solution and growing the yeast. Put the bottle
directly on your stove to boil and then cool (with the bottle sealed with a foam
stopper) before adding yeast to minimize the chance of infection. Withstands
temperatures of over 700 F.
This 3000 ML bottle requires a #9 rubber stopper. Or use our
Foam Stoppers (recommended, see link below for proper size) as an airlock to seal while making yeast
A gas stove is recommended, as electric burners can cause the glass to crack.