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Alcohol concentration must be above 60% for alcohol gel to be effective in killing Microbes . Researchers at East Tennessee State University recently found that products with alcohol concentrations as low as 40% are available in American stores.

Alcohol gel can be used quite like a mild Napalm . If one applies it liberally in any shape, it can be lit with fire to produce a low blue flame. This is due to Alcohol producing a blue flame when lit. Some hand sanitizer gels may not produce this effect due to a high concentration of water or moisturizing agents.


SOURCES

  • http://www.colostate.edu/Orgs/safefood/NEWSLTR/v8n3s06.html

  • Reynolds SA, Levy F, Walker ES. 2006. Hand sanitizer alert (letter) . Emerging Infectious Diseases (CDC publication).



It is important to note that not all pathogens are equally susceptible. Certain bacteria, especially the spore-forming gram positives (e.g. Clostridium Difficile ) are relatively immune and remain contagious.