Description
Straight stir bar 60 x 10 mm – for magnetic stirrers
Straight 6 x 1 cm stir bar for magnetic stirrers, for example when making a yeast starter. It is coated with PTFE and has a strong Alnico V magnet core. The smooth surface with rounded ends improves stirring, even at low speeds.
Features
- Size: 60 x 10 mm
- PTFE-coated, strong Alnico V magnet core
- Smooth surface with rounded ends
- High chemical resistance
- Temperature resistant from -200 to +280 °C
- Manufacturer: VWR
Frequently asked questions about the stir bar
What is the stir bar used for?
The stir bar goes in the flask on the magnetic stirrer. The stirrer makes it spin, keeping the yeast starter moving and adding oxygen. That helps the yeast multiply.
How do I know the stirring is right?
Increase the speed until you see a vortex in the surface of the starter. The flask needs headspace, so a 2-litre starter needs a flask larger than 2 litres.
Can it be boiled?
Yes. The stir bar withstands -200 to +280 °C, so it can be boiled with the starter to sanitise it.
Related
Betaling
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