Hi,<br><br>Talking about multifunctional products for a survival kit I think that a small bottle of KMnO4 crystals would be a better choice when one wants it to be a multi purpose 'item'.<br><br>In high concentration it's a very good disinfectant and even helps you to kill off naty "foot fungus" lower concentrations are fine for cleaning wounds and it can also be used to "sterilize" water to make it potable.<br><br>The nice thing is that one can use the coloration of the water as a gauge, depending on the number of KMnO4 crystals one dissolves in the water the color changes from light purple to a dark purple color.<br><br>Also a small amount of the KMn)4 crystals go a long way.<br><br>Best Scouting wishes from Holland,<br><br>Bagheera<br><br>