The ceramic filter cracked on my water purifier so now I am looking at tablets for a cheap alternative. I know you cannot use Iodine for extended use but are there time limitations to the use of this product. I will in the nevada wilderness for 55 days and I need a cheap water purification solution.

I may be a little late on this answer---but: Micropur tablets used as recommended: produce Chlorine Dioxide at a concentration of 4 PPM (parts per million). The Environmental Protective Agency currently recommends Chlorine Dioxide as part of the water treatment process for U.S. cities, with allowance of a higher concentration than Micropur gives. However, the other part of the city treatment process is microfiltration to remove organic matter from water. If your water is not clean to start with, you can get a by-product,chlorite, which is not good for small children ----or you, with long-term consumption. Bottom Line: Use Micropur where the water is pretty clean, if you are going to be drinking a lot of it. Other Chemicals: Main drawback for iodine is that it does not kill Cryptosporidium protozoa. Main drawback for chlorine liquid is: when you use it in water that contains organic material, you get carcinogenic by products. For a long solo trip in Nevada: I recommend the Katadyn Hiker Pro microfilter. I use Micropur tablets as a backup, or in Asia and South America with microfilters to kill viruses that filters don't remove.