Water Filters & Purifiers
GRAYL
US maker of press-style purifier bottles that treat viruses as well as bacteria.
Not tested
Specifications are manufacturer-published figures compiled in August 2026. We have not independently tested this equipment. A dash means the figure could not be confirmed with the manufacturer.
GRAYL models
| Model | Format | Rated pore size | Removes | Rated life | Weight |
|---|---|---|---|---|---|
| GeoPress 24 oz | Press purifier | — | Viruses, bacteria, parasites, chemicals, heavy metals | 250 L per cartridge | 439 g |
| UltraPress 16.9 oz | Press purifier | — | Viruses, bacteria, parasites, chemicals, heavy metals | 300 L per cartridge | 354 g |
| UltraPress Titanium | Press purifier, titanium | — | Viruses, bacteria, parasites, chemicals, heavy metals | 300 L per cartridge | 490 g |
A dash means the figure could not be confirmed with the manufacturer.
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