Ditch the silver purification for more efficient methods like chlorine or iodine based tabs. Unless you are using a filter with the silver tablets, i would suggest you stick to the tried and true methods.<br>Cost and time spent might also be a concern. It takes about 4 hours for silver to bind to the proteins in the bacteria whereas chlorine or iodine take about 30 min - 1 hour. I'm sure that the cost for silver tablets is higher than the other two.<br>The only people that seem to sing the praises of silver are those selling the silver based products.<br><br>