I'm looking for some powder

[big_white_dog84]

I'm after microparticles for a project I'm doing. I want a good range of sizes of particle between about 4 microns and up to 100 microns, the majority being between 10 and 40.

I've looked at materials catalogues like goodfellow but it's all too expensive (starts about £1 per gramme). I also asked at a clean room to see if we could get some stuff out their filters but they say it will be too much hassle.

Any ideas? Doesn't matter what material it is.

 

[big_white_dog84]

OK. Thanks for that.

 

[big_white_dog84]

Icing sugar is around 10-40 microns. I can sell you some for slightly less than £1 per gram.

Thanks. Have you got a link for this please?

 

[big_white_dog84]

Thanks for the smart replies. There have been only two decent replies to my question.

I have found a graph on the british sugar website - icing sugar mean size 24 microns, max about 11. Ideal for what I want. Thanks.

 

[big_white_dog84]

We are developing a portable optical instrument to detect microparticles in insulating oil eg from transformers and switchgear.

 

[big_white_dog84]

It might be soluble in water, but not in transformer oil.

 

[big_white_dog84]

Anti set off powder comes in a variety of sizes in the range you want. It's pumped out the back of printing presses on to each wet sheet to stop them sticking & allow ink oxidization. Pop into your local printer & see if you can scrounge some

Thanks. I have emailed the company for some info.