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What type of aluminium powder is best for flash powder.

Hi I know that there are great and experienced pyrotechnics on this site so I need your advice if its good with you all.
What type of aluminium powder is best for flash powder is it German dark, Indian dark, or 1250 mesh 10 micron aluminium powder.
To all those into pyrotechnics I am glad to meet you through this site because I am obsessed with fireworks.

Pyro73 years ago
Star Molecule (Military Grade Aluminum Powder) hands down, end of discussions. I've used them all, and even watched the German TH, German Dark, and TH Dark WITH an oxidizer added, and it still did not come close.

Site: www.StarMolecule.com

Video I saw, then tested myself: http://www.youtube.com/watch?v=r_kVM7TmZe0
PyroBen3 years ago
The smaller the micron, the better. The Star Molecule seems to be amazing since it is 1.5 micron. That is really good when most of the German and the Indian powders have the lowest of 3 micron.
jackh943 years ago
Also sometimes called German Dark aluminium, and the finer it is, the louder, so you want lower micron numbers or higher mesh numbers
jackh94 jackh943 years ago
that should have been a reply to hellrider75.
Also, there's nothing better than trying it out: so if you mix a little of each to test them and then the best way to light small amounts is to put the powder and a little bit of visco onto the centre of a piece of masking tape then fold the tape over to seal it all in with the visco sticking out. For a louder bang wrap a bit more tape around it.
hellrider753 years ago
For best results, the aluminum powder should be "Dark Pyro" grade, with a flake particle shape