ibah

Hi again mixing it 7grams oxidizer and 3 grams aluminum. Thanxs for the replies.

Hi I am new to this site and was wondering about this aluminum powder I have recently bought. Here are some specs on the Aluminum powder - 1250 mesh - Reagent Grade 99.99%, Super fine 10 micron, spherically atomized, reactive, uncoated powder. The reason I am asking is that when I tried to make some flash the way I always have, it was very hard to light and when it did light it burned slowly and just turns into a blob of very hot molten metal which is quite bright as it burns. I have been trying the aluminum with potassium nitrate and have tried potassium perchlorate in 10 gram trials and still can t get a good flash. Is there other formulas I can use to make flash with this aluminum powder.
I have made flash with other aluminum powder and have had no problems with it. Also would 200 mesh aluminum be used for flash. Any answers are greatly appreciated.