How to Make flash powder with KNO3, S, and Al
See how you can make some very powerful flash powder with KNO3, S, and Al in this video tutorial. In case you don't know, KNO3 is the symbol for potassium nitrate, also called saltpeter. S means sulfur or sulphur, and Al stands for aluminum. You can get powered aluminum at the paint store, and potassium nitrate and sulfur at the garden store.