RE: [Philmont]: How Much Water

I shared others concerns until I checked out the Micropur tablets. I’m
submitting this so others can have more information to develop their own
conclusions. I’m sure opinions will be available after some treks have been
completed this summer.

http://www.katadyn.net/micropur.html

http://www.polarequipment.com/

Technical Features

Katadyn Micropur MP1 Tablets Purpose and Action

* The only disinfection system effective against viruses, bacteria,
Giardia and cryptosporidium.
* Fresh tasting water -- no unpleasant taste.
* Easy-to-use tablets. Each tablet is individually packaged for
longest shelf life (3 years).
* Meets EPA purification guidelines.

Specifications

* Purification method: Chlorine Dioxide Tablets
* Capacity: 30 tablets
* Output: 1 tablet treats 1 quart of water (premeasured...no mixing or
measuring)

Micropur MP1, which is registered 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 challenging 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).

Polar pure web site provides us the following information to compare with
Micropur.

QUESTION #7: How long do I treat very cold water (35° F for example)?

ANSWER: Lower temperature water treatment times have not been determined for
EPA approval at this time for any chemical water disinfectant products. Our
suggestion is to warm the water to be treated to 68° F if possible. When
camping in cold conditions, water to be treated can be warmed by keeping the
bottle close to your body, either in your jacket or sleeping bag.

QUESTION #13: Should the water to be treated be the same temperature as the
Polar Pure solution?

ANSWER: The amount of solution required to treat your drinking water is
determined by the temperature of the solution in your Polar Pure bottle. The
amount required corresponds with the green dot on the dosage table on the
side of the Polar Pure bottle. The temperature of the water to be
disinfected does not need to be the same as the Polar Pure solution
temperature. Please remember that the temperature of the water to be
disinfected effects treatment time. See question #7 for details.

QUESTION #18: Will Polar Pure kill cryptosporidium?

ANSWER: At this time, we cannot say if Polar pure kills cryptosporidium. So
far, no chemical water disinfectants (including Polar Pure, Potable Aqua
etc.) have been tested by EPA for their effectiveness against
cryptosporidium.

Dosage Table (Polar Pure)

SOLUTION TEMPERATURE

CAPFULS OF POLAR PURE PER QUART

95° F (35° C)

1.2

86° F (30° C)

1.3

77° F (25° C)

1.5

68° F (20° C)

2

59° F (15° C)

2.5

50° F (10° C)

3.5

41° F (5° C)

4

With cold water temperatures I feel it would be a lot easier to run out of
polar pure before Micropur. Polar Pure requires up to 4 capfuls in water at
5C, thus only treating 2 liters of water per bottle before recharging. You
also need to take in consideration which trek you are on and the water
supply for that trek. I do not think Philmont would switch without a good
reason and when comparing the cost the Micropur is many times more
expensive. One other difference is Micropur is giving us more information.
I have used and don’t dislike Polar Pure but personally think I will like
the switch to Micropur. Not having to worry about the bottles being
recharged, broken or even lost.

Regards Doug

-----Original Message-----
From: owner-philmont@troop47.com [mailto:owner-philmont@troop47.com] On
Behalf Of Herbert Dulzo
Sent: Wednesday, April 27, 2005 1:01 PM
To: Multiple recipients of list philmont
Subject: [Philmont]: How Much Water

I have a concern about the switch to Micropur Vs Capacity. In theory with a
4 hour treatment time one could run out of "treated" water.

Herb Dulzo

going agin in 2006

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Received on Sun May 1 03:40:59 2005