Hi Guys,
Anyone know if there is anywhere in Adelaide that sells Magnetic Stir Bars. I am collecting bits to make myself a Magnetic Stirrer for yeast starter preparation.
Thanks
Mick
This doesn't answer your question but have you considered using an aquarium pump to aerate rather than a stir plate? You can pick up .45 micron filters from the chemist (made to fit in syringes) that fit in line perfectly and you can get a pump for $10 at the pet shop.
This doesn't answer your question but have you considered using an aquarium pump to aerate rather than a stir plate? You can pick up .45 micron filters from the chemist (made to fit in syringes) that fit in line perfectly and you can get a pump for $10 at the pet shop.
That is a good idea Tim do you have a pic of your set up , does it cause foaming of the wort ?
Pumpy
3) Wort Aeration:
If possible, don't! The reason is that it is not the wort that needs the oxygen, it is the yeast. By oxgenating the wort instead of the yeast starter, it will cause an over production of cells due to the excessive oxygen presence. This then leads to the production of unwanted esters and higher alcohols that will compromise beer flavor.
...it is best to only aerate the starter if you are so equipped to do this. The reason is that once the yeast has all the oxygen it needs to build strong cell walls and reproduce, it does not need any more. Any additional oxygen beyond that point will cause them to stay in a reproductive state rather than begin a fermentative state. If you can do this, you will notice a refined smoothness to your beers due to a reduction in ester production and therefore your beer will condition faster.
Since shaking a starter vigorously only produces large bubbles, it is an inefficient and inconsistent practice. I assume if you would do it for a LONG time... say 30 minutes, it would probably be sufficient, but 1) who wants to shake a starter for 30 minutes? & 2) since the air is not sterile, you would definitely risk contamination.
Thanks for that Tim a picture is wort a thousand words .
I have all that gear with exception of the two new Syringe filters from when I used to aerate the wort but this seems a better idea for bulking up the yeast .
How long do you pump it for ?
Pumpy
but does it look as cool as the vortex of a stir plate?
thats the REAL question
Hi Guys,
Anyone know if there is anywhere in Adelaide that sells Magnetic Stir Bars. I am collecting bits to make myself a Magnetic Stirrer for yeast starter preparation.
Thanks
Mick
but does it look as cool as the vortex of a stir plate?
thats the REAL question
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