Description
Cotton stopper for Erlenmeyer flask – for yeast starters
Cellulose cotton stopper from VWR, designed for use with Erlenmeyer flasks in sterile laboratory conditions. The stopper lets air through while keeping contaminants out, making it a safe and practical choice when you make a yeast starter in an Erlenmeyer flask.
Technical data
- Diameter: 43/46 mm
- Fits: Erlenmeyer flasks with a 44 mm inner neck diameter, such as our Erlenmeyer flasks
- Material: cellulose
- Manufacturer: VWR
How to sterilise the stopper
The stopper can be sterilised in an oven at 150 °C for 15 minutes. We recommend wrapping it in aluminium foil before placing it in the oven.
Frequently asked questions about the cotton stopper for Erlenmeyer flasks
Why use a cotton stopper instead of foil?
The stopper sits securely in the neck of the flask and keeps contaminants out while letting air pass. This makes it well suited to yeast starters.
Can the stopper be reused?
Yes. Sterilise it in an oven at 150 °C for 15 minutes, preferably wrapped in aluminium foil.
Will the stopper fit my Erlenmeyer flask?
The stopper has a diameter of 43/46 mm and fits flasks with a 44 mm inner neck diameter, such as our Erlenmeyer flasks.
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