The Platypus Gravityworks 6.0L Filter is a mature product that addresses the use cases of high-volume water treatment for groups and basecamp scenarios. It is simple to operate and is robust and reliable. It provides clean water at a higher rate and with less effort than mechanical pumps, and at a comparable weight. Its main limitations are that it will not remove viruses or chemicals and that it is more difficult to use in non-forest environments such as above treeline and deserts. Drew Smith, who recently reviewed this product, has used this filter for years on group outings and will continue to do so.
Strengths
- Walkaway operation, low hands-on time
- High capacity
- Robust design unlikely to fail in the field
- Field cleanable
- Good weight to capacity (volume) ratio for groups
- Easy to collect and transport water
Limitations
- Does not remove viruses or chemicals
- No adapter for wide-mouth bottles
- Requires trees or other support, preferably > 5 feet height
- Decreased filtration rate over time, even with backflushing
