
insertion
removal
lock cartridge
important!
CARE AND USE PRECAUTIONS PRO TIPSCARTRIDGE INSTALLATION
Firmly grasp the Inner Press. Insert
cartridge into the bottom of the
Inner Press.
Firmly grasp the Inner Press. Rotate
the cartridge counter-clockwise until
it separates from the Inner Press.
Rotate cartridge clockwise until you
feel it CLICK and LOCK INTO PLACE.
If the cartridge is not locked, it can
fall o during use.
PROPER INSTALLATION OF CARTRIDGE
PREVENTS CROSS-CONTAMINATION.
Do not use soap on Purifier Cartridge. Purify freshwater only.
Cross-contamination.
Sourcing the best water.
Lifespan of purifier cartridges.
Shelf life of unused purifier cartridges.
On an Airplane.
Cyanobacteria, excessively high lead levels, mercury, etc.
CAUTION WITH TANNINS
No freezing.
Durability and accidental drops.
Wash GEOPRESS (not Purifier Cartridge) by Hand.
long-term storage.
Do not wash cartridge with soap or other cleaning
agents. Soap will damage the purifier media. You may
rinse cartridge with clean water as needed.
Use freshwater only (no other liquid). NO salt or brackish water.
Do not expose/fill the Inner Press with untreated water, cross
contamination may occur. If this does happen, disassemble
and wash GEOPRESS (not Purifier Cartridge) with soapy water
and rinse thoroughly. Alternatively, thoroughly dilute potential
contaminants by pressing (and agitating) water through the
GEOPRESS Purifier 5-7 times.
Always begin with the cleanest (least silty) water available. For
instance, streams are generally better than lakes and bogs (which
are often have higher levels of sediment and tannins).
The lifespan of a cartridge varies with the quality of the
water sources; the clearer, the better. High levels of silt
or sediment will shorten the lifespan of the cartridge.
Typically, when using clear water, a cartridge will be
eective for ~350 cycles (65 gal/ 250L). As “press time”
reaches ~25 seconds (or three years have elapsed since
first use) it’s time to replace your cartridge.
Stored under proper conditions, an unused (and
airtight) cartridge has a shelf life of 10 years.
As an airplane climbs to cruising altitude, cabin
pressure drops, causing air to expand inside GEOPRESS.
Prevent leaking by flying with your GEOPRESS
completely empty (no water to leak) or completely
full (no air to expand). Once you’ve reached cruising
altitude, use GEOPRESS normally.
Purifier Cartridges are designed to remove trace levels of chemicals
and heavy metals. The GEOPRESS was NOT designed to protect
against industrial disasters, coal ash spills, very high lead levels,
mercury, nuclear disasters or toxic blue-green algae (cyanobacteria),
etc. Find another water source in these situations.
Tannins are natural organic compounds that leach from
decomposing vegetation and trees and can cause purifier
cartridges to prematurely stop working. In high concentrations,
tannins are easily recognizable, as they turn water tea-colored
and form blackwater rivers. Do not use GEOPRESS in water with
high tannin concentration.
Cartridges are not significantly degraded after one freeze/thaw
cycle. However, don’t use a cartridge after 3 or more freeze/thaw
cycles. Protect your GEOPRESS in freezing temperatures by keeping
it full of water and insulate in a jacket or sleeping bag.
Incredibly durable, a GEOPRESS Purifier withstands drop tests (at
full capacity) up to 10 feet (3 meters).
The Outer [Re]Fill, Inner Press, and Drink-Thru Cap can
all be washed by hand with warm, soapy water. Do not
put any components into a dishwasher. Do not wash
Purifier Cartridge with soap or any other cleaning agents.
For long-term storage, prepare GEOPRESS for storage
to prevent growth of mildew and odors. Thoroughly
dry cartridge by performing one ‘dry press’ by pressing
the wet Purifier into an empty (no water) Outer Refill
and dump excess water. Allow cartridge to air-dry thor-
oughly (depending on humidity it will take 2-4 days to
completely dry). Hand wash all other parts with warm,
soapy water. Reassemble unit to create air tight seal
for storage. Cartridges can last up to three years after
opening if cared for properly between uses.
© 2022 GRAYL, INC. / 1.9
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No hot (or boiling water) or microwaves.
Do not expose Purifier Cartridge to water hotter than 120F (50C), it
will harm purifier media. Do not put the GEOPRESS in the microwave.