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139 of 142 people found the following review helpful
on September 30, 2007
I've used these several times over the past year, and compared to other chemical water treatments they're relatively painless. You don't have to force yourself to down chemical-tasting water.

To the earlier reviewer who mentioned treatment time: 4 hours is a worst-case scenario mandated by the EPA for killing one type of organism (cryptosporidium) in water that is both very cold and very dirty. All bacteria and viruses, except cryptosporidium and giardia, are killed in 15 minutes (even in cold water). Cryptosporidium and giardia are both killed in 30. In cold, very dirty (cloudy) water, it can take 4 hours for a full crypto kill.
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65 of 65 people found the following review helpful
on July 23, 2007
We took these tablets to Bangladesh, and used them on a daily basis. You do have to wait three hours to make sure all the microorganisms are killed, but the water tasted fine, and no one got sick, so these seemed to work well for us.
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45 of 47 people found the following review helpful
on September 24, 2010
My friend and I went on a five day backpacking trip in CA, and hands down, these tablets produced the most normal tasting water. We had access to plenty of lakes, streams, and sometimes a pond looking pool of water. We didn't take a chance, so we treated all sources with this and a different brand. Although other brands took only a few minutes, this one takes at least four hours to treat. Other brands actually change the color into an orange color, but this Katadyn makes the water clear and we couldn't tell the difference.

Again the four hour treatment time takes a bit of planning, but definitely worth it.
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57 of 62 people found the following review helpful
on April 6, 2007
One has to weigh the advantages and disadvantages of this product based on one's needs or requirements. IMO, the pros and cons are...
Pros: These tabs weigh only a few ounces, but can treat up to 20 liters.
They are very effective at killing off viruses, bacteria, Giardia, and Cryptosporidium(EPA accepted). This product is great if you can't build a fire or boil water.
Cons: One tab for one liter so unless you stock up, you can only support one person for 5 days if you use 1 gal. or 4 liters per day for roughly $10. Compare this to 96oz(~56000 drops) of Clorox for $4 and it only takes 16 drops to treat 1gal. of water. Katadyn claims that their tabs leave virtually no taste to the water, but I disagree. There is a very strange taste in the water that is less tolerable than chlorine IMO. Minimum treatment time is 30 minutes for both.
Alternative: Boil water for 5 minutes at any desired quantity at virtually no cost! :)
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18 of 18 people found the following review helpful
Katadyn MicroPur Purification Tablets are a necessary and vital part of my gear to prevent illness from waterborne diseases. The tablets contain Chlorine Dioxide. They are very easy to use, portable, and individually wrapped. They also have a long shelf life of 5 years. Micropur tablets are effective against viruses, bacteria, Giardia and Cryptosporidium.

One tablet destroys:
+ Viruses and bacteria in 15 minutes
+ Giardia in 30 minutes
+ Cryptosporidium in 4 hours

When possible, I recommend doing research to determine the water quality in the area that you will be backpacking or camping especially to determine if the water contains Cryptosporidium since this is what causes the 4 hour wait time. If there is no Cryptosporidium then you won't need to wait 4 hours.

When backpacking or camping I firmly believe in using multiple methods to ensure clean drinkable water. If you have ever been sick from drinking contaminated water and are hours away from help you will appreciate the benefit this tablet provides. I always use a water filter in conjunction with using the MicroPur purification tablets. One tablet treats one liter of water so plan accordingly on how many tablets you may need. I have noticed a slight chlorine after taste when the water is warm but when the water is cold I have never notice any after taste.

For those who despise a four hour wait time you can try the following method. To help get around the four hour wait time I always have a least two Nalgene water bottles. When one bottle is empty I will add water to the bottle and treat it with a MicroPur purification tablet while my other bottle still contains drinkable water. I continually rotate my drinkable water with water that is being treated. Remember, the bottle threads may contain water that is not treated and can get you sick so take appropriate precautions. While this isn't a perfect method it does seem to work fairly well as long as you have a water source available. In a desert environment this method tends not to work well due to the lack of available water sources. In those cases I carry a lot of water.

Some drawbacks to this product include:

- Four hour wait time for cryptosporidium
- Tablets can get crushed so pack them well
- The package can be difficult to open
- Safety caveat! There are Precautionary Statements stating:--DANGER: Corrosive. Causes irreversible eye damage and skin burns. Harmful if absorbed through the skin. Harmful if swallowed. Do not get in eyes, on skin or on clothing. Wear protective eye wear (safety glasses), protective clothing and rubber gloves. Wash thoroughly with soap and water after handling. Remove contaminated clothing and wash clothing before use.

In other words use this product with care as there are some very real risks if mishandled. Don't be in a rush, slow down, and use this product correctly.

Overall, this is a great product that I highly recommend to prevent illness from contaminated water.
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20 of 21 people found the following review helpful
on February 4, 2011
The product description had me at "30 tablets individually sealed in foil pouches". The iodine tablets tend to come in little jars that have an uncertain shelf life once opened. So, these 30 individual pouches are now dispersed amongst various packs, bins, and vehicles. Perfect.

The general rule is 1 gallon per person per day. That's 4 tabs per person per day of emergency, unless you can boil the stuff ...

At $2 per gallon, I wouldn't use these for purifying a lot of water if I had other options. For example, tossing a 7 gallon container of tap water into the truck gives me about the same amount of treated water as the 30 tablets could provide. Also, never underestimate the usefulness of a gallon of bleach.
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20 of 21 people found the following review helpful
on October 24, 2010
It's impossible to tell if things like this work because if you don't get sick, you don't know if the water was infected or not. Nonetheless, on my last backpacking trip I planned on getting water from a stream that I saw on a map.

The stream ended up being extremely low, almost dry actually. The water was brown, almost completely still and very sketchy looking... I was pretty reluctant to drink it but I didn't have any other source of water for the trip.

I filled a 40oz container and added the pill. Waited 4 hours and drank the whole thing. Then got more water for the rest of the trip. I didn't get sick so it must have worked!
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13 of 13 people found the following review helpful
on February 1, 2011
I purchased these 01/27/11 to store for emergency preparedness. The tablets I received expire 06/2014. Anyone looking for solutions that will store for a longer period of time may want to find another method of purification.
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15 of 17 people found the following review helpful
We've used them in the Rocky Mountains...they work well.
Taste much better than the iodine-based purification tablets we used as kids in Scouting units.
We keep several packages in our emergency kits and food storage supplies, "just in case." Cheap insurance for the price. You gotta have clean, pure water to surive any disaster or emergency...these Katadyn MicroPur water purification tablets will give you that clean, pure water!
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9 of 10 people found the following review helpful
on June 29, 2009
These tablets take 4 hours and water must be kept dark for that time. It tastes better then iodine tablets, but iodine only takes about 20 minutes. They do the job, at least I have no reason to believe they failed, but you must factor the requirements into your situation.
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