wg48temp9
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Ceramic balls available at Aldi UK
Aldi has ceramic balls for sale at approximately 0.75l tub for £4.
A tongue test indicates they are not porous. They do not break easily and the fracture surface is not smooth like glass but passes the tongue test.
The tub says they are good too 200C (that may be limited by thermal shock) and can be washed by hand. they are about 10mm dia.
They do have a rough surface but as they are not porous they will not make good anti bumping beads.
They may be useful as cheap grinding media or packing for a large column. I have not tested their chemical resistance.
I am wg48 but not on my usual pc hence the temp handle.
Thank goodness for Fleming and the fungi.
Old codger' lives matters, wear a mask and help save them.
Be aware of demagoguery, keep your frontal lobes fully engaged.
I don't know who invented mRNA vaccines but they should get a fancy medal and I hope they made a shed load of money from it.
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Polysialate
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What are they sold as/for? I don't know what isle this would go in...
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wg48temp9
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Cooking, they are used to hold the tops of pies down. Thats what it says on the tub. i guess having a perfect pie top is important.
They are called ceramic baking beans. Aldi sells them online too.
https://www.aldi.co.uk/kirkton-house-ceramic-baking-beans/p/... Free delivery if you spend over £20.
PS: When you internet search for "baking beans" lots of ads appear. One ad for 99p is a bit misleading it was for one bean.
[Edited on 9/1/2019 by wg48temp9]
I am wg48 but not on my usual pc hence the temp handle.
Thank goodness for Fleming and the fungi.
Old codger' lives matters, wear a mask and help save them.
Be aware of demagoguery, keep your frontal lobes fully engaged.
I don't know who invented mRNA vaccines but they should get a fancy medal and I hope they made a shed load of money from it.
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j_sum1
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Actually they are for the bottom of pies.
When you want to partially cook the crust before filling but you don't want the whole thing puffing up. You put some weight on it but you choose
something that will allow hot air to circulate in the oven.
Traditionally actual dried beans or peas were used, which is why they are named such. But something ceramic is a bit more weighty, does not taint the
pastry and is more durable.
My suspicion is that they are not likely to find much practical use in the lab. They are probably going to be cheap and brittle: not useful for a
grinding medium and having no advantage over a bit of pottery as boiling chips. But what is the harm in trying. If you are extremely lucky they are
zeolite and can be used as 4A sieves. 
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wg48temp9
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More info on the Aldi cooking beans:
The volume of £4 of balls is 0.5l, the mass is 697g, 540 balls.
Mass 1.29g per ball (129g/100ball),
Size 9.8mm dia (average of ten balls)
Density 2.63kg/l (borosilicate glass 2.23kg/l)
Coefficient of restitution 0.77 (glass marble 0.658)
[Edited on 9/2/2019 by wg48temp9]
I am wg48 but not on my usual pc hence the temp handle.
Thank goodness for Fleming and the fungi.
Old codger' lives matters, wear a mask and help save them.
Be aware of demagoguery, keep your frontal lobes fully engaged.
I don't know who invented mRNA vaccines but they should get a fancy medal and I hope they made a shed load of money from it.
|
|
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Herr Haber
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I got my milling media from Inoxia (ebay & Amazon).
Expensive, very expensive.
I would have loved to find these a couple of months ago.
The spirit of adventure was upon me. Having nitric acid and copper, I had only to learn what the words 'act upon' meant. - Ira Remsen
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wg48temp9
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On a vaguely related subject: I just discovered that Aldi has made it across the pond WOW. There is is at least one there, in Orlando Florida.
I don't know if they sell the cooking beads or not LOL.
I am wg48 but not on my usual pc hence the temp handle.
Thank goodness for Fleming and the fungi.
Old codger' lives matters, wear a mask and help save them.
Be aware of demagoguery, keep your frontal lobes fully engaged.
I don't know who invented mRNA vaccines but they should get a fancy medal and I hope they made a shed load of money from it.
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