I second the suggestion about two tablets; use as sterile (filtered and sterilized) water as possible to irrigate a wound. Another way is to add 16 drops of PVP iodine (Betadine) to a liter, or to boil the water (and cool it). Do the best you can under the circumstances. Another item on wound irrigation - 9 x 1 gram salt tables to a liter of water will give a saline solution for irrigating a wound.<br><br>