Description
Magnetic stirrer 5L – MST from Velp Scientifica
MST is a small but powerful magnetic stirrer of professional lab quality from Velp Scientifica in Italy. It stirs liquids of up to 5 litres and is well suited to yeast starters for brewing. The stirrer stays cold, even after several days of continuous use, and offers good speed control, even at low speeds.
Features
- stirring volume: up to 5 litres
- electronic speed control, up to 1100 rpm
- good speed control even at low speeds
- stays cold during long use
- technopolymer casing that resists chemicals
- supplied with power cable
How to use the stirrer for a yeast starter
Boil dry malt extract and water, cool it and pour the starter into a flask with a stir bar. Place the flask on the stirrer and adjust the speed until you see a vortex. The flask needs air, and a cotton stopper lets in oxygen while keeping dirt out. Brewshop has written its own guide (in Norwegian) to a simplified yeast starter:
How to make a simplified yeast starter (Norwegian)
Frequently asked questions about the 5L magnetic stirrer
How big a yeast starter can I make?
The stirrer handles up to 5 litres. Remember the flask must be larger than the starter, so there is room for air.
Is a stir bar included?
A stir bar is not listed as included. For small starters a straight 40 × 8 mm stir bar is enough.
Does the stirrer get hot?
No. It stays cold, even after several days of continuous use.
How long should the starter stay on the stirrer?
Brewshop’s guide to a simplified starter uses 7–9 hours. A standard starter is usually left for at least 12 hours.
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