User Review: Platypus GravityWorks Filter System
Source: bought it new
Price Paid: $99.95
This is another version of the Platypus GravityWorks filter systems in a 2 liter model that attaches directly to a water bottle rather than another reservoir. The unit comes with multiple attachments to allow connection from the filter output to a wide variety of bottles. As the name implies, the system uses gravity to draw impure water through the filter unit efficiently and without effort from the user.
- No pumping!
- Quick. 2 liters in under 2 minutes.
- Filters bacteria and protozoa down to 0.2 microns
- Cannot allow filter to freeze
I bought this system as a lighter weight alternative to the MSR Miniworks EX. I also wanted an effective means of filtering without a lot of effort or time involved. The GravityWorks delivered.
When I took the "dirty" water reservoir down to the creek to fill, the first thing I noticed was how easily I was able to fill it and without completely submerging it. I then walked back up to camp, attached the filter to the self sealing quick disconnect of the reservoir and the "clean" side to a water bottle. I hung the reservoir and watched it fill.
Compared to the Miniworks, it was fast and filled two 1 liter bottles in under 2 minutes. That time includes the bottle switch. The Miniworks, takes over 2 minutes for 1 liter and is quite a workout to force water through the filter with the hand pump. I also liked the fact that I didn't have to stay right at the creek until the filtering was completed.
The filter uses hollow fiber technology and the manufacturer states it will last 1500 uses. The best part, no moving parts to break. The unit also assembles and stores easily. In general, I am sold by it.