By Bota of Boulder - H2O on Demand Filtration system - a filter straw that removes Giarda, Cryptosporidium and E-Coli bacteria. Comes in a self contained storage unit, that can be used as a drinking vessel, and for safe water collection. Lab test results linked below.

3rd party laboratory testing of filter longevity (pdf) show that the replaceable filter is good for more than 100 liters of filtration. Tests showed that efficacy falls off after 200 liters of water so replace them around 100 just to be safe.

Test it out at home prior to field use. That way you can learn how to give it an initial priming (sucking water into it), and learn how much suction to apply.

Test Results:

Protozoan Removal:
Giardia > 99.9%
Cryptosporidium > 99.9%

Bacteria Removal
Legionella > 99.9999%
Salmonella > 99.9999%
Escherichia (E. coli) > 99.9999%

Chemical Concentration Reduction:
Arsenic 90%
Copper > 99%
Lead > 99%
Chlorine > 83%
Iodine > 83%

All tests were performed by Hydreion LLC (microbiology research and consulting company) using water from Rattlesnake Creek in Missoula, Montana (pathogens added). Testing was conducted using the United States EPA Guide Standard (1986) and Protocol for Testing Microbiological Water Purifiers. Three identical filters were tested for each organism or chemical. Positive and negative controls were used to evaluate any possible laboratory error.

Instructions: Remove filter from container, insert flexible straw into top of filter. Make sure straw is snug. Fill Container with water, avoid excessive silt and debris. Partially submerge filter into water - do not submerge entirely. It works best at 2/3 to 3/4 submersion. Draw water through straw.

This filter traps contaminants, protozoan parasites, and bacteria but does not stop viruses. If viruses are present or suspected, use filtration in conjunction with chemical treatment (such as our Potable Aqua Tablets) to ensure virus free drinking water.

Good for 26 gallons of filtration.

Weighs just 2.8 ounces

One of our customers did a field video review of the product. He was kind enough to let us post it here:

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