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Platypus GravityWorks 4.0L Filter System

So, you have an intention to buy the portable filter for your hiking holiday. Trouble is, you suddenly realized that all those devices have a very small capacity and it doesn’t suit your big and friendly company. Many purification systems are able to hold no more than 1 liter inside and that’s a huge problem for backpackers who prefer to travel together. But, Platypus GravityWorks Filter System is designed for up 8 liters: 4 of those are filtered and 4 others dirty.


Let’s Elaborate Further

There is no need to carry gallons with you because with Platypus you can retrieve clean water without any bacteria or protozoa wherever you go. This one of the best survival water filters is famous for its one of the highest flow rate among similar products: it reaches 1.75 liters per minute. This was made possible due to the new construction based on the force of gravity instead of simple pumping technology.

Platypus GravityWorks removes practically all microorganisms living in the water, or rather, 99.9999% of bacteria and 99.9% of protozoa. It works without any chemicals. The high-grade filtration process is provided by hundreds of tiny hollow membranes.

Pure Simplicity

Just imagine: you don’t need to pump the water inside or desperately try to sip directly from the filter. “How to use it” step-by-step guide is easy as a pie:

  1. Fill the “dirty” reservoir with a water from the source;
  2. Hang it and wait 2 minutes and 17 seconds (the device copes with 4 liters precisely during this time;
  3. Pour the liquid from the “clean” reservoir anywhere you want and drink.


Key Characteristics of a Product:

  • Productivity: 1.75 liters per minute;
  • The crucial feature is gravity-based technology which supplies users with water without any human efforts;
  • Platypus filters up to 1500 liters during its lifetime;
  • 8 liter capacity – 4 can be stored in one reservoir, the rest in the other;
  • Meets EPA and NSF guidelines;
  • Internal filter consists of microfiber membranes which are able to extract 99% of particles from the water;
  • Weighs only 305 grams (11 ounces).

 What Consumers Like the Most

Primarily, people are amazed by the simplicity of the gravity system and purification and its speed. It is able to work great in various weather conditions and is also easy to roll up – the packing takes about 1 minute. Few complaints were connected with the plastic taste of water on an early stage of usage, but you can solve this by filling both bags with clean water and hang them for a couple of days. Another shortcoming is that drying the “clean” reservoir takes a while. Also, some customers suggest replacing plastic holes for the straps with the metal ones due to material fragility.

Even though the product needs some minor improvements, it is one of the fastest and the most innovative filters on the market which is worth buying.