how is it superior to simple bleach based purification? http://www.survivaltopics.com/survival/better-than-bleach-use-calcium-hypochlorite-to-disinfect-water/ h

how is it superior to simple bleach based purification? http://www.survivaltopics.com/survival/better-than-bleach-use-calcium-hypochlorite-to-disinfect-water/ http://www.survivaltopics.com/survival/better-than-bleach-us...