Multi-purpose chemical: Potassium Permanganate When mixed with glycerin, it creates fire without friction. That same oxidizing power makes it useful for water purification, wound disinfection, and even as an antifungal soak. A pinch per liter of clear water turns pink, then fades to brown or clear as it kills bacteria and parasites. Let it sit for 30 minutes before drinking. Long shelf life. Multiple uses. Great for survival. | Rob Benson