The replacement purification cartridges for the UltraPress™ water filter bottle are designed for a lifespan of 300 cycles (40 gal./ 150 l).The lifespan decreases when cleaning water with a high content of mud, sediments, or tannins.The pressing time of the cartridge increases towards the end of the cartridge´s lifespan.When the pressure time reaches 25-30 seconds, the cartridge should be replaced.The cartridge continues to provide protection even as the pressure time increases.Replacement water filter cartridge compatible with the UltraPress water filter bottle.Removes waterborne pathogens (99.99% of viruses, 99.9999% of bacteria, 99.9% of protozoan cysts), including rotavirus, hepatitis A, norovirus, giardiasis, cryptosporidium, E.coli, cholera, salmonella, dysentery, and more.Filters:Fine particulates (e.g., mud, microplastics, etc.).Activated carbon effectively adsorbs chemicals, pesticides, heavy metals, flavors, and odors.Cartridge lifespan:designed for 300 cycles (40 gal./ 150L), when the ´´pressure time´´ reaches 25 seconds (or three years have passed since the first use), it is time to replace your purification cartridge.Improves taste, odor, and clarity.Active technology:Ion exchange, ultra-powdered activated carbon.Fast flow rate:10 seconds per 16.9 fl oz (3 liters/minute).Filter durability:Stored properly, an unused (and airtight sealed) filter insert has a shelf life of 10 years.BPA-free materials:Made from food-grade ABS plastic and food-grade silicone.Antimicrobial:Yes.Chemical-free:Yes.Valve not included.