Forum Index » General Lightweight Backpacking Discussion » How long does Katadyn Micropur MP 1 really take?


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Darwin Roos
(darwin310) - F

Locale: Great Lakes Area
How long does Katadyn Micropur MP 1 really take? on 09/20/2009 19:48:05 MDT Print View

Hello. I hope that you all are doing well.
How long does it take Katadyn Micropur MP 1 chlorine tablets to fully treat water? Katadyn says that it takes 4 hours for one tablet to treat one liter of water. That's quite a long time. Is it safe to drink water after using it for a shorter period of time? If so, how long?

Darwin
daroos@indiana.edu
Marco A. Sánchez
(marcoasn) - M

Locale: The fabulous Pyrenees
Re: How long does Katadyn Micropur MP 1 really take? on 09/21/2009 02:53:56 MDT Print View

4 hours is the contact time required to purify cold water (39 ºF / 4 ºC), that is, to kill viruses, bacteria (E. Coli…), and cyst (Cryptosporidium, Giardia…)

The contact time to kill bacteria and viruses is 15 minutes, and to kill cyst in mild water (68 ºF / 20 ºC) 30 minutes (clear water).
B. F.
(thrush) - F
Re: on 09/29/2009 15:36:17 MDT Print View

If you use an additional filter (e.g. Aqua Mira Frontier Pro) wich takes on the "bigger and harder to kill" stuff, you can cut down the treating time to 15 minutes. Also, the filter helps to reduce sediments, taste, chemicals and turbidity. Treating time depends mainly on concentration and temperature. Also, certain circumstances can reduce the effectivness of tablets, for example small particles and turbidity. Therefore, when you only use the tablets, wait as long as you can, but at least 15-30 minutes (you won't be 100% safe tho).