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GRAYL Water Purifier Bottles
Compare the complete GRAYL range at 68travel: GeoPress, UltraPress, titanium models, replacement cartridges, one-way valves, and compatibility.
Related guides
All GRAYL guides
All GRAYL guides
GRAYL’s system is built around press-style purifier bottles with replaceable cartridges. At 68travel, the range includes standard and titanium GeoPress and UltraPress bottles, the correct cartridges for each family, a one-way drink-mix valve, and a legacy Ultralight replacement filter.
The fastest way to choose is by capacity: GeoPress treats 710 ml per cycle, while UltraPress treats 500 ml and is more compact.
Current GRAYL bottle range
|
Bottle |
Capacity |
Weight |
Cycle |
Cartridge rating |
Main reason to choose it |
|---|---|---|---|---|---|
|
710 ml |
450 g |
About 8 s |
350 cycles / 250 l |
Higher capacity per press |
|
|
500 ml |
354 g |
About 10 s |
300 cycles / 150 l |
Compact size and lower weight |
|
|
710 ml |
570 g |
About 8 s |
350 cycles / 250 l |
Higher capacity plus titanium outer cup |
|
|
500 ml |
400 g |
About 10 s |
300 cycles / 150 l |
Compact purifier plus titanium outer cup |
The titanium outer cups can be used separately for heating water or cooking. Titanium does not change the cartridge family or purification speed.
Shop the GRAYL range
Current cartridge range
GeoPress Replacement Cartridge
The GeoPress cartridge fits the 710 ml GeoPress family, including GeoPress Ti. It is rated for up to 350 cycles or 250 litres.
UltraPress Replacement Cartridge
The UltraPress cartridge fits the current 500 ml UltraPress family, including UltraPress Ti. It is rated for up to 300 cycles or 150 litres.
Ultralight Replacement Filter
The separately listed Ultralight Replacement Filter is described for the older Ultralight Compact Purifier. It should not be selected as a substitute merely because “Ultra” appears in both names. Current UltraPress owners should use the cartridge explicitly sold for UltraPress.
One-way valve for drink mixes
The GRAYL One-Way Valve lets users add electrolytes or drink mix to the clean-water side while reducing backflow through the cartridge.
Two versions are listed:
GeoPress: for second-generation cartridges with horizontal flow channels.
UltraPress / UltraLight: compatible with the relevant UltraPress or UltraLight cartridge design.
Choose the variant by bottle family. Do not wash the purifier cartridge with soap; the removable silicone valve has its own cleaning instructions.
How the purification system works
GRAYL bottles separate source water in the Outer Cup from treated water in the Inner Press. As the Inner Press moves down, water passes through the cartridge. Published performance includes viruses, bacteria, and protozoan cysts, plus filtration of sediment and microplastics and reduction of many chemicals, heavy metals, tastes, and odours.
That makes the system relevant to:
international travel;
hiking and camping;
overland and vehicle-based travel;
emergency kits;
buyers who want a replaceable-cartridge purifier rather than a disposable bottle.
Which GRAYL should I buy?
Choose GeoPress if…
you want 710 ml per cycle;
you often fill another bottle;
two people may share purification;
extra capacity matters more than minimum packed size.
Choose UltraPress if…
you travel solo;
your pack pockets are narrow;
you value a 354 g standard bottle;
500 ml per cycle is enough.
Choose a titanium model if…
you will genuinely use the outer cup for heating or cooking;
multi-use camp gear is worth the additional price and weight;
you understand that the purifier parts must be removed before exposing the outer cup to heat.
Cartridge life in practical terms
Published cartridge capacity is a planning figure, not a guarantee for every source. Silty, sediment-heavy, or tannin-rich water shortens life. Replace a cartridge when press time reaches around 25 seconds under normal conditions, or three years after first use. Unused airtight cartridges have a published shelf life of up to ten years when stored correctly.
Sources and limitations
GRAYL purifier bottles do not desalinate seawater or brackish water. They are not intended for industrial disasters, extreme chemical contamination, nuclear incidents, or toxic blue-green algae. Always choose the clearest suitable freshwater and follow local advisories.
Technical figures and operating limits on this page are based on GRAYL's published specifications and instructions:
These are manufacturer-published benchmarks, not a guarantee for every source. Press time and cartridge life vary with water quality, sediment, temperature, cartridge age, and user technique. Use suitable freshwater only: GRAYL cartridges do not desalinate salty or brackish water and are not intended for industrial spills, extreme chemical contamination, nuclear incidents, or toxic blue-green algae. Follow local advisories and choose another source when conditions exceed the manufacturer's guidance.
Frequently asked questions
Are GeoPress and UltraPress cartridges interchangeable?
No. Match the replacement cartridge to the bottle family.
Do standard and titanium versions use different cartridges?
No. GeoPress and GeoPress Ti use the GeoPress family; UltraPress and UltraPress Ti use the UltraPress family.
Are all colours always available?
No. The admin catalog contains more variants than the English storefront currently returns. Check the live product selector for current colour availability.
Is there a prebuilt bottle-and-cartridge bundle?
No dedicated bundle product was found in the current FeroAdmin catalog. You can build the pairing by adding the bottle and its compatible spare cartridge separately.