Since this thread got brought up again via another thread, I thought I'd address a couple of mistakes here:

First, the dwell time for the Micropur tablets for killing the same things that iodine can kill is 15 minutes. In other words, exactly the same time as the iodine.

Second, the chlorine dioxide tablets can kill crypto, which iodine can't reliably do.

To kill crypto, you should wait anywhere from 30 minutes (for clear, tepid water) to 4 hours (for turgid, cold water). Perhaps that's where Flipper got the 4 hour wait time - it's *only* for killing crypto in cold, dirty water.

I think chlorine dioxide tablets are a lot better than iodine in every way except price.

Fare enough on the corrections I forgot the cripto comparrison.

I read the instructions for micorpur a while ago and threw them out of course. <img src="/images/graemlins/blush.gif" alt="" />.

Where is this information for 30 min wait time to kill all bacteria = to iodine? I can't remember reading it to be honest. Sounds reasonable though.

Flip

Just got this from Katadyn's web site:

Micropur MP1, which is regesterd with the EPA, is an easy-to-use water purification tablet that is effective against harmful bacteria, viruses and cysts. It is the only tablet currently registered with the EPA that effectively controls cryptosporidium, a waterborne cyst. MP1 has been extensively tested using EPA testing protocols. The test data is summarized below:
Microorganisms Killed Contact Time
EPA Water #1(clear, 20° C) EPA Water #2(dirty, 4° C)
Bacteria 15 minutes 15 minutes
Virus 15 minutes 15 minutes
Cysts 30 minutes 4 hours
Note: Product instructions have a 4 hour contact time. Fulfilling the role of protecting consumers, the EPA requires that packaging claims for Micropur MP1 communicate how the product performs in the most challanging water conditions (water that is very cold and dirty). While MP1 is effective against bacteria and viruses in 15 minutes, it requires 4 hours for cryptosporidium in cold, dirty water. Therefore, labeling requirements include a 4 hour wait time for maximum consumer protection (see chart above).

Looks like I may retire the iodine for good!

They tasted like crap anyway.

Flip

Placed an order with thelifestylestore and just revieved it. I ordered several of each size glass and plastic. I have not put my PA in them yet, but Ill use teflon tape to seal the glass vials. Nice product with fast shipping. I would recommend them.

Andy

Cool - I was going to post the URL to that, so glad you tracked it down.

I've been using them for a year now and really like them.