The replacement filter fits all Grayl Ultralight & Ultrapress outdoor and travel filters. The filter is not compatible with Grayl Geopress models. It is small and affordable and filters out suspended solids, protozoa, bacteria and even viruses. It also reduces most chemicals. There is currently no other filter on the market that does as much as the little Grayl. With this little companion, you can safely drink from almost any water source. -BPA-free -No batteries, chemicals, pump attachments or other accessories needed. -Effective against protozoa (99.9999%), bacteria (99.9999%), viruses (99.9999%) -Reduces chemicals and heavy metals -Functions optimally at a pH between 5 and 9.5 (in nature there is hardly any water with a pH value outside these limits). -Tested according to NSF standards (National Sanitation Foundation, USA) Note on storage - unused, the filter cartridges can be stored for 10 years without hesitation. Already used cartridges can be stored for 3 more years according to the manufacturer. However, if you want to be on the safe side, we recommend that you do not store a used cartridge for longer than one year. Please always allow to dry out thoroughly before storing! Caution - a wet or damp filter must NEVER freeze.

This personal outdoor and travel water filter sets it apart from any other water filter on the market. Why? It is small and affordable and filters out particulate matter, protozoa, bacteria and even viruses. In addition, it also reduces most chemicals. There is currently no other filter on the market that does so much than the Grayl GeoPress. With this compact companion you can safely drink from almost any source of water. Therefore, the filter is also ideal for crisis operations or if your water supplier has problems with germs in the water. The easiest and most comfortable operation is ensured by the use of SoftPress ™ ergonomic comfort pads for non-slip and fatigue-free pressing. The material TopoGrip ™ non-slip TPE ensures a good grip and a long durability of the filter on all heavily used surfaces. In our opinion, the Grayl GeoPress water filter is therefore easy in every household, because it saves money and waste and lets you travel sustainable. So you never have to buy mineral water for single use again. Filling - pressing - drinking The operation of the filter is very simple. The dirty water is poured into the "outer" bottle. Then the "inner" bottle is used, on the bottom of the filter cartridge is screwed. This bottle is then pressed down through the dirty water. Debris, chemicals and pathogens remain in the filter membrane and the inner bottle fills with clean water, which you can drink directly. With OnePress ™ Global Protection, travelers, adventurers and survivors can secure dodgy water sources and surface waters anywhere in the world.     BPA-free     No batteries, chemicals, pump tips and other accessories needed     Effective against protozoa (99.9999%), bacteria (99.9999%), viruses (99.9999%), including rotavirus, hepatitis A, norovirus, giardiasis, cryptosporidium, E. coli, cholera, salmonella, dysentery and more     Improves taste, smell and clarity of the water     filters microplastic as well as many chemicals and heavy metals     No sucking or squeezing the bottle necessary     Technology: ion exchange, ultrapulverized activated carbon     Easy filtering of up to 350 fillings (about 250 l)     Flow rate up to 5l / min.     Works optimally at pH values ??between 5 and 9.5 (in nature, there is hardly any water with a pH outside these limits.)     Tested to NSF standards (National Sanitation Foundation, USA) The new SimpleVent ™ Drink Cap has three functions:     vented during cleaning     protects against cross contamination and dirt     allows one-handed hydration through fast-flowing drinking spout Note on storage - unused, the filter cartridges can be stored for 10 years if properly stored. If you want to be on the safe side, however, we recommend that you do not use a used cartouche for more than a year. Please always dry well before storing! Important - a wet or damp filter should NEVER freeze. Origin: Engineered in the USAFilter housing Geopress: made in ChinaFilter cartridges GeoPress: made in USA

The replacement filter fits all Grayl GeoPress outdoor and travel filters. These are the successor generation of the successful and well-known Grayl Ultralight Purifiers and not compatible with each other. It is small and affordable and filters out particulate matter, protozoa, bacteria and even viruses. In addition, it also reduces most chemicals. There is currently no other filter on the market that does so much than little Grayl. With this little companion you can safely drink from almost any source of water.     BPA-free     No batteries, chemicals, pump tips and other accessories needed     Removes: Pathogens in water (99.99% of viruses, 99.9999% of bacteria, 99.99% of protozoan cysts), including rotavirus, hepatitis A, norovirus, giardiasis, cryptosporidium, E. coli, cholera, salmonella, Ruhr & more     Filter: Particles (filters eg silt, microplastics, etc.); Activated carbon effectively adsorbs chemicals, pesticides, heavy metals, flavors and odors     Reduces chemicals and heavy metals     Works optimally at a pH between 5 and 9.5 (in nature hardly any water is available with a pH outside these limits)     NSF Protocol 42 and 53 for the removal of pathogens and chemicals; Conforms to the EPA Guidance and Protocol for Testing Microbiological Water Purifiers Note on storage - unused, the filter cartridges can be stored for 10 years without hesitation. Already used cartridges can be stored for 3 more years according to the manufacturer. If you want to play it safe, however, we recommend that you do not store a used cartouche for more than a year. Please always dry well before storing! Note - NEVER freeze a wet or damp filter.

This personal outdoor and travel water filter sets it apart from any other water filter on the market. Why? It is small and affordable and filters out particulate matter, protozoa, bacteria and even viruses. In addition, it also reduces most chemicals. There is currently no other filter on the market that does so much than the Grayl GeoPress. With this compact companion you can safely drink from almost any source of water. Therefore, the filter is also ideal for crisis operations or if your water supplier has problems with germs in the water. The easiest and most comfortable operation is ensured by the use of SoftPress ™ ergonomic comfort pads for non-slip and fatigue-free pressing. The material TopoGrip ™ non-slip TPE ensures a good grip and a long durability of the filter on all heavily used surfaces. In our opinion, the Grayl GeoPress water filter is therefore easy in every household, because it saves money and waste and lets you travel sustainable. So you never have to buy mineral water for single use again. Filling - pressing - drinking The operation of the filter is very simple. The dirty water is poured into the "outer" bottle. Then the "inner" bottle is used, on the bottom of the filter cartridge is screwed. This bottle is then pressed down through the dirty water. Debris, chemicals and pathogens remain in the filter membrane and the inner bottle fills with clean water, which you can drink directly. With OnePress ™ Global Protection, travelers, adventurers and survivors can secure dodgy water sources and surface waters anywhere in the world.     BPA-free     No batteries, chemicals, pump tips and other accessories needed     Effective against protozoa (99.9999%), bacteria (99.9999%), viruses (99.9999%), including rotavirus, hepatitis A, norovirus, giardiasis, cryptosporidium, E. coli, cholera, salmonella, dysentery and more     Improves taste, smell and clarity of the water     filters microplastic as well as many chemicals and heavy metals     No sucking or squeezing the bottle necessary     Technology: ion exchange, ultrapulverized activated carbon     Easy filtering of up to 350 fillings (about 250 l)     Flow rate up to 5l / min.     Works optimally at pH values ??between 5 and 9.5 (in nature, there is hardly any water with a pH outside these limits.)     Tested to NSF standards (National Sanitation Foundation, USA) The new SimpleVent ™ Drink Cap has three functions:     vented during cleaning     protects against cross contamination and dirt     allows one-handed hydration through fast-flowing drinking spout Note on storage - unused, the filter cartridges can be stored for 10 years if properly stored. If you want to be on the safe side, however, we recommend that you do not use a used cartouche for more than a year. Please always dry well before storing! Important - a wet or damp filter should NEVER freeze. Origin: Engineered in the USAFilter housing Geopress: made in ChinaFilter cartridges GeoPress: made in USA

This personal outdoor and travel water filter sets it apart from any other water filter on the market. Why? It is small and affordable and filters out particulate matter, protozoa, bacteria and even viruses. In addition, it also reduces most chemicals. There is currently no other filter on the market that does so much than the Grayl GeoPress. With this compact companion you can safely drink from almost any source of water. Therefore, the filter is also ideal for crisis operations or if your water supplier has problems with germs in the water. The easiest and most comfortable operation is ensured by the use of SoftPress ™ ergonomic comfort pads for non-slip and fatigue-free pressing. The material TopoGrip ™ non-slip TPE ensures a good grip and a long durability of the filter on all heavily used surfaces. In our opinion, the Grayl GeoPress water filter is therefore easy in every household, because it saves money and waste and lets you travel sustainable. So you never have to buy mineral water for single use again. Filling - pressing - drinking The operation of the filter is very simple. The dirty water is poured into the "outer" bottle. Then the "inner" bottle is used, on the bottom of the filter cartridge is screwed. This bottle is then pressed down through the dirty water. Debris, chemicals and pathogens remain in the filter membrane and the inner bottle fills with clean water, which you can drink directly. With OnePress ™ Global Protection, travelers, adventurers and survivors can secure dodgy water sources and surface waters anywhere in the world.     BPA-free     No batteries, chemicals, pump tips and other accessories needed     Effective against protozoa (99.9999%), bacteria (99.9999%), viruses (99.9999%), including rotavirus, hepatitis A, norovirus, giardiasis, cryptosporidium, E. coli, cholera, salmonella, dysentery and more     Improves taste, smell and clarity of the water     filters microplastic as well as many chemicals and heavy metals     No sucking or squeezing the bottle necessary     Technology: ion exchange, ultrapulverized activated carbon     Easy filtering of up to 350 fillings (about 250 l)     Flow rate up to 5l / min.     Works optimally at pH values ??between 5 and 9.5 (in nature, there is hardly any water with a pH outside these limits.)     Tested to NSF standards (National Sanitation Foundation, USA) The new SimpleVent ™ Drink Cap has three functions:     vented during cleaning     protects against cross contamination and dirt     allows one-handed hydration through fast-flowing drinking spout Note on storage - unused, the filter cartridges can be stored for 10 years if properly stored. If you want to be on the safe side, however, we recommend that you do not use a used cartouche for more than a year. Please always dry well before storing! Important - a wet or damp filter should NEVER freeze. Origin: Engineered in the USAFilter housing Geopress: made in ChinaFilter cartridges GeoPress: made in USA

Purifier Cartridge for  GRAYL UltraPress Outdoorfilter Virus protection Removes 99.9999% of viruses (e.g. Hepatitis A, SARS, Rotavirus). Bacteria & protozoa protection Removes 99.9999% of disease-causing bacteria (e.g. E. coli, Salmonella) and 99.999% of protozoan cysts (e.g. Giardia, Cryptosporidium). Improves hygienics, flavor, odor & clarity Filters particulates (e.g. sediment, silt), many chemicals (e.g. chlorine, benzene) and heavy metals (e.g. lead, arsenic). Shelf life Stored under proper conditions, an unopened Purifier Cartridge has a shelf life of 10 years.

This personal outdoor and travel water filter sets it apart from any other water filter on the market. Why? It is small and affordable and filters out particulate matter, protozoa, bacteria and even viruses. In addition, it also reduces most chemicals. There is currently no other filter on the market that does so much than the Grayl UltraPress. With this compact companion you can safely drink from almost any source of water. Therefore, the filter is also ideal for crisis operations or if your water supplier has problems with germs in the water. The easiest and most comfortable operation is ensured by the use of SoftPress ™ ergonomic comfort pads for non-slip and fatigue-free pressing. The material TopoGrip ™ non-slip TPE ensures a good grip and a long durability of the filter on all heavily used surfaces. In our opinion, the Grayl UltraPress water filter is therefore easy in every household, because it saves money and waste and lets you travel sustainable. So you never have to buy mineral water for single use again. Filling - pressing - drinking The operation of the filter is very simple. The dirty water is poured into the "outer" bottle. Then the "inner" bottle is used, on the bottom of the filter cartridge is screwed. This bottle is then pressed down through the dirty water. Debris, chemicals and pathogens remain in the filter membrane and the inner bottle fills with clean water, which you can drink directly. With OnePress ™ Global Protection, travelers, adventurers and survivors can secure dodgy water sources and surface waters anywhere in the world.     BPA-free     No batteries, chemicals, pump tips and other accessories needed     Effective against protozoa (99.9999%), bacteria (99.9999%), viruses (99.9999%), including rotavirus, hepatitis A, norovirus, giardiasis, cryptosporidium, E. coli, cholera, salmonella, dysentery and more     Improves taste, smell and clarity of the water     filters microplastic as well as many chemicals and heavy metals     No sucking or squeezing the bottle necessary     Technology: ion exchange, ultrapulverized activated carbon     Easy filtering of up to 300 fillings (about 150 l)     Flow rate up to 3l / min.     Works optimally at pH values ??between 5 and 9.5 (in nature, there is hardly any water with a pH outside these limits.)     Tested to NSF standards (National Sanitation Foundation, USA) The new SimpleVent ™ Drink Cap has three functions:     vented during cleaning     protects against cross contamination and dirt     allows one-handed hydration through fast-flowing drinking spout Note on storage - unused, the filter cartridges can be stored for 10 years if properly stored. If you want to be on the safe side, however, we recommend that you do not use a used cartouche for more than a year. Please always dry well before storing! Important - a wet or damp filter should NEVER freeze. Origin: Engineered in the USA Filter housing UltraPress: made in China Filter cartridges UltraPress: made in USA

This personal outdoor and travel water filter sets it apart from any other water filter on the market. Why? It is small and affordable and filters out particulate matter, protozoa, bacteria and even viruses. In addition, it also reduces most chemicals. There is currently no other filter on the market that does so much than the Grayl UltraPress. With this compact companion you can safely drink from almost any source of water. Therefore, the filter is also ideal for crisis operations or if your water supplier has problems with germs in the water. The easiest and most comfortable operation is ensured by the use of SoftPress ™ ergonomic comfort pads for non-slip and fatigue-free pressing. The material TopoGrip ™ non-slip TPE ensures a good grip and a long durability of the filter on all heavily used surfaces. In our opinion, the Grayl UltraPress water filter is therefore easy in every household, because it saves money and waste and lets you travel sustainable. So you never have to buy mineral water for single use again. Filling - pressing - drinking The operation of the filter is very simple. The dirty water is poured into the "outer" bottle. Then the "inner" bottle is used, on the bottom of the filter cartridge is screwed. This bottle is then pressed down through the dirty water. Debris, chemicals and pathogens remain in the filter membrane and the inner bottle fills with clean water, which you can drink directly. With OnePress ™ Global Protection, travelers, adventurers and survivors can secure dodgy water sources and surface waters anywhere in the world.     BPA-free     No batteries, chemicals, pump tips and other accessories needed     Effective against protozoa (99.9999%), bacteria (99.9999%), viruses (99.9999%), including rotavirus, hepatitis A, norovirus, giardiasis, cryptosporidium, E. coli, cholera, salmonella, dysentery and more     Improves taste, smell and clarity of the water     filters microplastic as well as many chemicals and heavy metals     No sucking or squeezing the bottle necessary     Technology: ion exchange, ultrapulverized activated carbon     Easy filtering of up to 300 fillings (about 150 l)     Flow rate up to 3l / min.     Works optimally at pH values ??between 5 and 9.5 (in nature, there is hardly any water with a pH outside these limits.)     Tested to NSF standards (National Sanitation Foundation, USA) The new SimpleVent ™ Drink Cap has three functions:     vented during cleaning     protects against cross contamination and dirt     allows one-handed hydration through fast-flowing drinking spout Note on storage - unused, the filter cartridges can be stored for 10 years if properly stored. If you want to be on the safe side, however, we recommend that you do not use a used cartouche for more than a year. Please always dry well before storing! Important - a wet or damp filter should NEVER freeze. Origin: Engineered in the USA Filter housing UltraPress: made in China Filter cartridges UltraPress: made in USA

This personal outdoor and travel water filter sets it apart from any other water filter on the market. Why? It is small and affordable and filters out particulate matter, protozoa, bacteria and even viruses. In addition, it also reduces most chemicals. There is currently no other filter on the market that does so much than the Grayl UltraPress. With this compact companion you can safely drink from almost any source of water. Therefore, the filter is also ideal for crisis operations or if your water supplier has problems with germs in the water. The easiest and most comfortable operation is ensured by the use of SoftPress ™ ergonomic comfort pads for non-slip and fatigue-free pressing. The material TopoGrip ™ non-slip TPE ensures a good grip and a long durability of the filter on all heavily used surfaces. In our opinion, the Grayl UltraPress water filter is therefore easy in every household, because it saves money and waste and lets you travel sustainable. So you never have to buy mineral water for single use again. Filling - pressing - drinking The operation of the filter is very simple. The dirty water is poured into the "outer" bottle. Then the "inner" bottle is used, on the bottom of the filter cartridge is screwed. This bottle is then pressed down through the dirty water. Debris, chemicals and pathogens remain in the filter membrane and the inner bottle fills with clean water, which you can drink directly. With OnePress ™ Global Protection, travelers, adventurers and survivors can secure dodgy water sources and surface waters anywhere in the world.     BPA-free     No batteries, chemicals, pump tips and other accessories needed     Effective against protozoa (99.9999%), bacteria (99.9999%), viruses (99.9999%), including rotavirus, hepatitis A, norovirus, giardiasis, cryptosporidium, E. coli, cholera, salmonella, dysentery and more     Improves taste, smell and clarity of the water     filters microplastic as well as many chemicals and heavy metals     No sucking or squeezing the bottle necessary     Technology: ion exchange, ultrapulverized activated carbon     Easy filtering of up to 300 fillings (about 150 l)     Flow rate up to 3l / min.     Works optimally at pH values between 5 and 9.5 (in nature, there is hardly any water with a pH outside these limits.)     Tested to NSF standards (National Sanitation Foundation, USA) The new SimpleVent ™ Drink Cap has three functions:     vented during cleaning     protects against cross contamination and dirt     allows one-handed hydration through fast-flowing drinking spout Note on storage - unused, the filter cartridges can be stored for 10 years if properly stored. If you want to be on the safe side, however, we recommend that you do not use a used cartouche for more than a year. Please always dry well before storing! Important - a wet or damp filter should NEVER freeze. Origin: Engineered in the USA Filter housing UltraPress: made in China Filter cartridges UltraPress: made in USA

This personal outdoor and travel water filter sets it apart from any other water filter on the market. Why? It is small and affordable and filters out particulate matter, protozoa, bacteria and even viruses. In addition, it also reduces most chemicals. There is currently no other filter on the market that does so much than the Grayl UltraPress. With this compact companion you can safely drink from almost any source of water. Therefore, the filter is also ideal for crisis operations or if your water supplier has problems with germs in the water. The easiest and most comfortable operation is ensured by the use of SoftPress ™ ergonomic comfort pads for non-slip and fatigue-free pressing. The material TopoGrip ™ non-slip TPE ensures a good grip and a long durability of the filter on all heavily used surfaces. In our opinion, the Grayl UltraPress water filter is therefore easy in every household, because it saves money and waste and lets you travel sustainable. So you never have to buy mineral water for single use again. Filling - pressing - drinking The operation of the filter is very simple. The dirty water is poured into the "outer" bottle. Then the "inner" bottle is used, on the bottom of the filter cartridge is screwed. This bottle is then pressed down through the dirty water. Debris, chemicals and pathogens remain in the filter membrane and the inner bottle fills with clean water, which you can drink directly. With OnePress ™ Global Protection, travelers, adventurers and survivors can secure dodgy water sources and surface waters anywhere in the world.     BPA-free     No batteries, chemicals, pump tips and other accessories needed     Effective against protozoa (99.9999%), bacteria (99.9999%), viruses (99.9999%), including rotavirus, hepatitis A, norovirus, giardiasis, cryptosporidium, E. coli, cholera, salmonella, dysentery and more     Improves taste, smell and clarity of the water     filters microplastic as well as many chemicals and heavy metals     No sucking or squeezing the bottle necessary     Technology: ion exchange, ultrapulverized activated carbon     Easy filtering of up to 300 fillings (about 150 l)     Flow rate up to 3l / min.     Works optimally at pH values between 5 and 9.5 (in nature, there is hardly any water with a pH outside these limits.)     Tested to NSF standards (National Sanitation Foundation, USA) The new SimpleVent ™ Drink Cap has three functions:     vented during cleaning     protects against cross contamination and dirt     allows one-handed hydration through fast-flowing drinking spout Note on storage - unused, the filter cartridges can be stored for 10 years if properly stored. If you want to be on the safe side, however, we recommend that you do not use a used cartouche for more than a year. Please always dry well before storing! Important - a wet or damp filter should NEVER freeze. Origin: Engineered in the USA Filter housing UltraPress: made in China Filter cartridges UltraPress: made in USA

This personal outdoor and travel water filter sets it apart from any other water filter on the market. Why? It is small and affordable and filters out particulate matter, protozoa, bacteria and even viruses. In addition, it also reduces most chemicals. There is currently no other filter on the market that does so much than the Grayl UltraPress. With this compact companion you can safely drink from almost any source of water. Therefore, the filter is also ideal for crisis operations or if your water supplier has problems with germs in the water. The easiest and most comfortable operation is ensured by the use of SoftPress ™ ergonomic comfort pads for non-slip and fatigue-free pressing. The material TopoGrip ™ non-slip TPE ensures a good grip and a long durability of the filter on all heavily used surfaces. In our opinion, the Grayl UltraPress water filter is therefore easy in every household, because it saves money and waste and lets you travel sustainable. So you never have to buy mineral water for single use again. Filling - pressing - drinking The operation of the filter is very simple. The dirty water is poured into the "outer" bottle. Then the "inner" bottle is used, on the bottom of the filter cartridge is screwed. This bottle is then pressed down through the dirty water. Debris, chemicals and pathogens remain in the filter membrane and the inner bottle fills with clean water, which you can drink directly. With OnePress ™ Global Protection, travelers, adventurers and survivors can secure dodgy water sources and surface waters anywhere in the world.     BPA-free     No batteries, chemicals, pump tips and other accessories needed     Effective against protozoa (99.9999%), bacteria (99.9999%), viruses (99.9999%), including rotavirus, hepatitis A, norovirus, giardiasis, cryptosporidium, E. coli, cholera, salmonella, dysentery and more     Improves taste, smell and clarity of the water     filters microplastic as well as many chemicals and heavy metals     No sucking or squeezing the bottle necessary     Technology: ion exchange, ultrapulverized activated carbon     Easy filtering of up to 300 fillings (about 150 l)     Flow rate up to 3l / min.     Works optimally at pH values between 5 and 9.5 (in nature, there is hardly any water with a pH outside these limits.)     Tested to NSF standards (National Sanitation Foundation, USA) The new SimpleVent ™ Drink Cap has three functions:     vented during cleaning     protects against cross contamination and dirt     allows one-handed hydration through fast-flowing drinking spout Note on storage - unused, the filter cartridges can be stored for 10 years if properly stored. If you want to be on the safe side, however, we recommend that you do not use a used cartouche for more than a year. Please always dry well before storing! Important - a wet or damp filter should NEVER freeze. Origin: Engineered in the USA Filter housing UltraPress: made in China Filter cartridges UltraPress: made in USA

This personal outdoor and travel water filter sets it apart from any other water filter on the market. Why? It is small and affordable and filters out particulate matter, protozoa, bacteria and even viruses. In addition, it also reduces most chemicals. There is currently no other filter on the market that does so much than the Grayl UltraPress. With this compact companion you can safely drink from almost any source of water. Therefore, the filter is also ideal for crisis operations or if your water supplier has problems with germs in the water. The easiest and most comfortable operation is ensured by the use of SoftPress ™ ergonomic comfort pads for non-slip and fatigue-free pressing. The material TopoGrip ™ non-slip TPE ensures a good grip and a long durability of the filter on all heavily used surfaces. In our opinion, the Grayl UltraPress water filter is therefore easy in every household, because it saves money and waste and lets you travel sustainable. So you never have to buy mineral water for single use again. Filling - pressing - drinking The operation of the filter is very simple. The dirty water is poured into the "outer" bottle. Then the "inner" bottle is used, on the bottom of the filter cartridge is screwed. This bottle is then pressed down through the dirty water. Debris, chemicals and pathogens remain in the filter membrane and the inner bottle fills with clean water, which you can drink directly. With OnePress ™ Global Protection, travelers, adventurers and survivors can secure dodgy water sources and surface waters anywhere in the world.     BPA-free     No batteries, chemicals, pump tips and other accessories needed     Effective against protozoa (99.9999%), bacteria (99.9999%), viruses (99.9999%), including rotavirus, hepatitis A, norovirus, giardiasis, cryptosporidium, E. coli, cholera, salmonella, dysentery and more     Improves taste, smell and clarity of the water     filters microplastic as well as many chemicals and heavy metals     No sucking or squeezing the bottle necessary     Technology: ion exchange, ultrapulverized activated carbon     Easy filtering of up to 300 fillings (about 150 l)     Flow rate up to 3l / min.     Works optimally at pH values between 5 and 9.5 (in nature, there is hardly any water with a pH outside these limits.)     Tested to NSF standards (National Sanitation Foundation, USA) The new SimpleVent ™ Drink Cap has three functions:     vented during cleaning     protects against cross contamination and dirt     allows one-handed hydration through fast-flowing drinking spout Note on storage - unused, the filter cartridges can be stored for 10 years if properly stored. If you want to be on the safe side, however, we recommend that you do not use a used cartouche for more than a year. Please always dry well before storing! Important - a wet or damp filter should NEVER freeze. Origin: Engineered in the USA Filter housing UltraPress: made in China Filter cartridges UltraPress: made in USA

The replacement filter fits all Grayl GeoPress outdoor and travel filters. These are the successor generation of the successful and well-known Grayl Ultralight Purifiers and not compatible with each other. It is small and affordable and filters out particulate matter, protozoa, bacteria and even viruses. In addition, it also reduces most chemicals. There is currently no other filter on the market that does so much than little Grayl. With this little companion you can safely drink from almost any source of water.     BPA-free     No batteries, chemicals, pump tips and other accessories needed     Removes: Pathogens in water (99.99% of viruses, 99.9999% of bacteria, 99.99% of protozoan cysts), including rotavirus, hepatitis A, norovirus, giardiasis, cryptosporidium, E. coli, cholera, salmonella, Ruhr & more     Filter: Particles (filters eg silt, microplastics, etc.); Activated carbon effectively adsorbs chemicals, pesticides, heavy metals, flavors and odors     Reduces chemicals and heavy metals     Works optimally at a pH between 5 and 9.5 (in nature hardly any water is available with a pH outside these limits)     NSF Protocol 42 and 53 for the removal of pathogens and chemicals; Conforms to the EPA Guidance and Protocol for Testing Microbiological Water Purifiers Note on storage - unused, the filter cartridges can be stored for 10 years without hesitation. Already used cartridges can be stored for 3 more years according to the manufacturer. If you want to play it safe, however, we recommend that you do not store a used cartouche for more than a year. Please always dry well before storing! Note - NEVER freeze a wet or damp filter.