Borosilicate Erlenmeyer Conical Flask 500mL

Erlenmeyer Conical Flask – 500 mL (Borosilicate Glass)

This 500 mL borosilicate Erlenmeyer flask is perfect for small-to-medium yeast starters when using a stir plate. Propagating healthy yeast gives your beer clean, expressive flavour instead of the off-notes that can come from under-pitching.

Strong, heat-resistant, and chemically stable, this borosilicate flask can be placed directly on a stir plate or used for short-term yeast storage. For lager fermentations or larger batches, we recommend scaling up to a 3 L flask for optimal cell growth.

Key Features:

• Capacity: 500 mL (0.5 L)

• Material: Borosilicate glass – heat and chemical resistant

• Ideal for yeast propagation and starter preparation

• Perfect for use with stir plates

• Suitable for yeast storage and lab applications

• Dimensions (mm): 110 (L) × 110 (W) × 185 (H) × 29 (opening)

• Safety warnings:

  **Please still exercise care when handling these and any other Borosilicate glass.**

  There is a common misconception that Borosilicate glass is virtually bulletproof and can handle any dramatic temperature that is thrown at it. This is not strictly true.

  Though it does have an incredible ability to withstand sudden and drastic temperature shocks compared to your average soda-lime glass, it should still be treated consciously with care.

  Cool all glassware slowly to prevent breakage, unless you are using VYCOR glassware which can go from high heat to ice water with no damage.

  Do not take your boiled flask directly from the stovetop straight into a bath of ice water. Though some people do this without failure, borosilicate glass is not designed for such an application. Please allow the flask to cool for a few minutes before running under water, before placing into an ice bath; the slower you introduce your flasks to temperature changes, the longer it will last. Going from fire to ice in a matter of seconds will introduce incredible amounts of stress to the glass structure. While the glass may be able to withstand this some of the time, other times you may not be so lucky. If the temperature differential is big enough, it will shatter. All Borosilicate glass will break eventually after a number of heat/cool cycles, it is impossible to give an exact number to determine when, but this is a natural an inherent feature of the material.

  Please do not boil your flasks dry or dry them out using a stove. The temperature for drying should not exceed 140°C, which a naked flame can easily exceed.

  Do not heat glassware that is etched, cracked, chipped, nicked, or scratched. It is more prone to break.

  Do not heat glassware directly on electrical heating elements. Excessive stress will be induced in the glass, and this can result in breakage.
  
  Small Bubbles that are less than 5mm and not located directly on the bottom of the flask is an acceptable manufacturing blemish.