LifeStraw
This Product
LifeStraw
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Katadyn BeFree
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Katadyn Gravity Camp 6L
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Sawyer Squeeze
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Awards  Top Pick Award Best Buy Award Editors' Choice Award Top Pick Award 
Price $14.97 at Amazon
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$36.30 at Amazon
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$14.95 at REI
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Overall Score Sort Icon
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75
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73
72
Star Rating
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Pros Lightweight, inexpensive, simpleEasy to use, fast flow rate, collapsible, lightweightLightweight, great price, durable design, fast flow, high volume filtration, use for cold weatherLightweight, adaptable, easy to use, lifetime guaranteeLightweight, inexpensive, kills all pathogens (including crypto), reliable
Cons No storage capabilities, hard to cleanLacks durability and reliabilityDoesn't filter out viruses, no additional storage reservoirNot great for group use, better if you replace the bagsTakes a long time to kill crypto, slight taste to the water, chemical treatment
Bottom Line An on-the-go filtration system that is simple and inexpensiveA soft bottle filtration system designed for lightweight travelThe best value gravity filter on the marketThis lifetime guaranteed product is easy to use on the trailThe best chemical treatment option that will kill all pathogens when given enough time
Rating Categories LifeStraw Katadyn BeFree Katadyn Gravity Camp 6L Sawyer Squeeze Water Treatment Drops
Water Quality (20%)
8
8
8
8
5
Durability & Maintenance (20%)
4
1
7
5
10
Treatment Time (15%)
8
10
8
9
2
Weight & Packability (15%)
9
10
6
7
9
Ease Of Set Up (15%)
10
9
6
7
8
Ease Of Filtration (15%)
3
9
9
8
9
Specs LifeStraw Katadyn BeFree Katadyn Gravity... Sawyer Squeeze Water Treatment...
Type of Filter/Purifier Straw filter Squeeze & on-the-go Gravity filter Squeeze, in-line, on-the-go Chemical treatment
Time to Treat One Liter (Timed Test) immediate immediate 64 seconds 40 seconds Clear Water - 20 min
Turbid Water - 35 min
Measured Weight (entire kit -- oz) 1.75 oz 2.1 oz 11.7 oz 5.7 oz 3.0 oz
Total cost per 100 L ($) $0.50 $4.00 $6.00 $0.01 $13.16
Replacement cartridge cost per 100 L ($) $0.50 $2.50 $2.67 $0.01 $13.16
# of Liters (L)/gallons (gal) per lifetime 4,000 L/1,000 gal 1000 L/264 gal 1,500 L/396 gal 378,541 L/100,000 gal 114 L/30 gal per package
Filter Media or Active Ingredient Hollow Fiber Hollow Fiber Pleated glassfiber Hollow Fiber Chlorine Dioxide
Removes Bacteria? Yes Yes Yes Yes Yes
Removes Protozoa? (Cryptosporidium, Giardia) Yes Yes Yes Yes Yes
Removes Viruses'? No No No No Yes
Removes Chemicals? Yes No No No No
Removes Heavy Metals? No No No No No
Removes Particulates (sediment, microplastics)? Yes Yes Yes Yes No
Filter Pore Size 0.2 microns 0.1 micron 0.2 microns 0.1 micron N/A
Advertised Flow Rate Varies 2.11 L per min 2 L/min 1.7L/min N/A
Dimensions 8.8 x 1.2 in 9.05 in x 2.73 in 10 x 6 x 2.4 in 11 x 6 N/A
Storage Capacity (L) 0 0.6 L 6 L 0 0
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