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RE: The most possible extreme powerful professional flash powder KClO4 Al S 50 40 10% (potassium perchlorate aluminum sulfur)
This flash powder much more better than the classic KClO4/Al 70 30, or KClO4 Mg 50:50. With sulfur the composition are much more brisant, louder and powerful. And the best, fastest, brightest KClO4/Al/S ratio what works coarser aluminum powder too.