Replacement purifier cartridges for the UltraPress are designed to last 300 cycles (40 gal. / 150L). Lifespan will decline when purifying water with high levels of silt, sediment or tannins.

Cartridge press time increases towards the end of the cartridge lifespan; when press time reaches 25-30 seconds, the cartridge should be replaced. Cartridge continues to protect, even as press time increases.

Features:
• Removes waterborne pathogens (viruses, bacteria, protozoan cysts), including rotavirus, hepatitis A, norovirus, giardiasis, cryptosporidium, E. coli, cholera, salmonella, dysentery, and more
• Filters: particulates (sediment, microplastics) and many chemicals, pesticides and heavy metals
• Improves taste, odor and clarity
• Active technology: Ion exchange and ultra-pulsed activated carbon
• Antimicrobial: Yes
• Chemical free: Yes
• Weight: 80 g 
• Fast flow rate: 3 liters/minute
• Cartridge life: designed for 300 cycles (150L), when the "press time" reaches ~25 seconds (or three years have passed since first use), it is time to replace the cleaning cartridge
• Cartridge shelf life: when properly stored, an unused (and airtight) cleaning cartridge has a shelf life of 10 years
• BPA-free Fabrics: made from food-grade ABS plastic and food-grade silicone
• Testing standards: independently tested by a certified laboratory to meet or exceed NSF/ANSI protocols 42 and 53 for pathogen and chemical removal; meets United States Environmental Protection Agency guidance standard and protocol for testing microbiological water purifiers
• Origin: Developed in the United States; purification cartridge media manufactured in the United States; cartridge manufactured in China