water purification tablets

I've been looking into water purification tablets as an emergency back up method for making water safe to drink. And it seems to me that there are 3 types of water purification tablets: Iodine, chlorine, and chlorine dioxide. And it sounds like from my research that the iodine are the worst...

Do water purification tabs expire? I have some "Portable Aqua" tabs that I bought several years ago. There is no expiration date listed.

5col Survival Supply has water purification tablets for sale. These are effective against cysts and bacteria, including giardia and cholera. Each tablet is 6.68% Titratable Iodine. One bottle of 50 tablets treats 25 quarts...

If the instructions on the tablet bottle say to use 2 tablets per quart of water, does that mean you can use 1 tablet in a 1/2 quart bottle for the same results?

What would be my best be when it comes to purchasing water purification tablets? What about these: http://www.aquatabs.ca/ And also, what is the most effective ready-to-use after purchase water purification system? Would a Katadyn Ceramic Water filter be enough for filtering water from a...

I thought I would post this so others would get an idea what to include in their must have's to be your own doctor in critical times. I've been a researcher for over 20 years in natural methods to treat myself and this is what I have accumulated in my bag of medicines that are easily obtained...

What is the general view on purification tablets? My thinking is that, if I need drinking water, I am going to strain and boil it anyway. Am I missing something? I have all I need to start a fire and boil water so I haven't bought any purification tablets. Thanks!

Which water purification tablets should I carry that have a long expiration period? Which foot powder and why? What brand mole skin works best for long hikes.

Now I am sure this has been brought up hundreds of times on the forums, but I'm just here to put in 2 cents after reading the back of my pill bottles for the millionth time, and finally having something register. Now in my years of hiking and backpacking I've never once needed to clean water...