Description
Oval magnet 30 x 16 mm – stir bar for magnetic stirrers
An oval stir bar (magnet) measuring 30 x 16 mm for magnetic stirrers, for example when you make a yeast starter in an Erlenmeyer flask. The magnet has a strong Alnico V core and a PTFE coating. The smooth surface and rounded ends give good stirring, even at low speeds.
Technical data
- Size: 30 x 16 mm, oval
- Core: Alnico V
- Coating: PTFE
- High chemical resistance
- Temperature resistant from -200 to +280 °C
- Manufacturer: VWR, part number 442-0405
Frequently asked questions about stir bars for magnetic stirrers
What is the magnet used for?
It goes in the flask or beaker on a magnetic stirrer. The stirrer makes the magnet spin so the liquid is stirred continuously. In a yeast starter this keeps the yeast in suspension and adds oxygen.
Can the magnet be boiled?
Yes. The PTFE coating withstands -200 to +280 °C, so the magnet can be boiled with the starter wort or sanitised together with the flask.
Why is the magnet oval?
The oval shape with rounded ends gives an even spin and good stirring, even at low speeds.
Related
Betaling
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.