These 250ml, narrow mouth flasks feature a smooth rim and heavy, uniform wall thickness. Borosilicate glassware is a lower cost, ISO certified, alternative to PYREX brand. Flasks are printed with capacity, graduations for approximate volume, and a marking spot. Neck opening fits stopper size 6.5. Sold in a pack of 12 flasks.
The Erlenmeyer Flask is used to heat and store liquids. The advantage to the Erlenmeyer Flask is that the bottom is wider than the top so it will heat quicker because of the greater surface area exposed to the heat.
