1000ml Erlenmeyer Flask

Create healthy yeast starters with the 1000 mL Erlenmeyer Flask, sized perfectly for 5-gallon homebrew batches. Made from borosilicate glass, it withstands rapid temperature changes so you can boil starter wort directly on the stovetop and chill it immediately in an ice bath without risk of cracking. The tapered design enables smooth swirling, while the flat base makes it compatible with most magnetic stir plates for efficient yeast growth.

This 1-liter flask provides ample space for vigorous starter activity while maintaining proper oxygenation and mixing. Borosilicate construction ensures durability during heating, cooling, and extended use, making it a reliable, lab-grade vessel for homebrewers who want consistent fermentation performance. With a compact footprint, it fits easily on kitchen burners, stir plates, and fermentation prep stations.

For best results, sanitize before use, allow extra headroom when boiling starter wort, and pair with a stir plate to maximize yeast cell count. This flask is ideal for maintaining yeast vitality and achieving cleaner, more predictable fermentations in standard 5-gallon brewing setups.