Grayl UltraPress Water Purifier Bottle 16.9 oz
- 16.9 oz (500ml) per press
- 8 to 10 seconds to purify, per the title
- 99.9% of viruses removed
- 99.9999% of bacteria removed
- 99.9% of protozoan cysts removed
- Filters sediment, microplastics, VOCs, PFAS, pesticides and heavy metals
- No pumps, batteries or chemicals needed
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A press-style purifier bottle that treats a bottle of water in seconds and removes viruses, bacteria and protozoan cysts. The listing gives no filter life, weight or dimensions.
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ASIN: B09GTD1SMMCategory: Camping Water Filters
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Overview
A one-press action drives the Grayl UltraPress: fill the bottle from a river, faucet or fountain, press down on a low surface, then drink. It purifies and filters in one step with no setup, pumps or hoses.
Choose it for travel and backcountry trips where fast, no-prep water treatment matters more than volume. It handles one bottle per press, and the listing says nothing about filter life, replacement or weight.
Who it's for
A solo hiker, backpacker or international traveler gets a bottle that purifies on the spot. Groups that need to filter many liters at once should look at a larger system.
Pros and cons
- Purifies in seconds
- Removes viruses, bacteria and protozoan cysts
- Filters sediment, microplastics and chemicals
- No pumps, hoses or batteries needed
- One bottle per press
- Filter life not listed
- Weight and dimensions missing
Performance notes
Pressing the bottle down on a low surface pushes water through the filter and purification stages in a single action. The listing says it removes pathogens at stated percentages and adsorbs chemicals, VOCs, PFAS and heavy metals. Speed is quoted as a range in the title and as a best case in the bullets.
Specifications
| Brand | Grayl |
|---|---|
| Capacity & performance | |
| Capacity | 16.9 oz (500ml) |
| Power & efficiency | |
| Power Source | None, no batteries or pumps |
| Construction & materials | |
| Color | Covert Black |
| Other details | |
| Purification Method | Press-style filter and purifier |
| Purify time | 8-10 seconds per the title; as quick as 10 seconds per the bullets |
| Removal | 99.9999% of bacteria, 99.9% of protozoan cysts, particulates, VOCs, PFAS, chemicals, pesticides, herbicides, heavy metals |
| Virus removal | 99.9% |
Frequently asked questions
How big is the GRAYL UltraPress bottle?
The listing gives the capacity as 16.9 oz (500ml) and no bottle dimensions or weight.
Does the GRAYL UltraPress need batteries or a pump?
No. The bullets say it requires no setup time, pumps, hoses, sucking straws, batteries, chemicals or prolonged waiting.
What does the GRAYL UltraPress remove from water?
The bullets list 99.9% of viruses, 99.9999% of bacteria and 99.9% of protozoan cysts, and say it filters particulates and adsorbs VOCs, PFAS, chemicals, pesticides, herbicides, heavy metals, flavors and odors.