GRAYL UltraPress replacement purifier cartridge for 16.9 fl oz — Black, lab-tested pathogen & chemical protection

The GRAYL UltraPress Replacement Purifier Cartridge (black) is a laboratory-certified internal filter designed to fit the UltraPress 16.9 fl oz purifier bottle and treat up to 300 cycles (≈40 gal / 150 L) of drinking water.

Keep your GRAYL UltraPress performing at peak capacity by swapping in this replacement purifier cartridge. Engineered as the internal element for the 16.9 fl oz UltraPress bottle, the cartridge combines particulate filtration, adsorption media, and pathogen-blocking layers in a single sealed unit. It’s independently tested to meet NSF-related performance protocols and offers a ten-year shelf life when stored unused under proper conditions.

How does the UltraPress purifier cartridge improve my water quality?

The cartridge reduces sediments, microplastics, chemical contaminants and pathogens through a layered treatment system. Physical filtration captures particles while activated and specialty adsorbents target volatile organic compounds, PFAS, heavy metals, and tastes or odors for cleaner-tasting water.

• Captures particulates such as sediment and microplastics
• Adsorbs VOCs, PFAS, pesticides, herbicides, and chemical tastes
• Includes barrier layers that laboratory testing shows reduce viruses, bacteria, and protozoan cysts

How long will one cartridge last and how should I store spares?

Each cartridge is rated for roughly 300 full press-and-fill cycles, equivalent to about 40 gallons (150 liters) of treated water. An unused cartridge stored properly has a shelf life of up to 10 years, letting you keep a spare for travel or emergency preparedness without frequent replacement concerns.

• Service life: ~300 cycles / 40 gal (150 L)
• Unused shelf life: up to 10 years when stored dry and sealed
• Replace promptly after reaching the cycle limit or if flow slows significantly

Is this cartridge compatible with my bottle and how is it installed?

This replacement cartridge is specifically made for the GRAYL UltraPress 16.9 fl oz purifier & filter bottle and replaces the original internal purifier element. Installation is tool-free: remove the old cartridge and press the new purifier into the bottle according to the UltraPress instructions for a secure, leak-free fit.

• Compatible with GRAYL UltraPress 16.9 fl oz purifier bottle only
• Tool-free swap: pull out old cartridge, insert new purifier element
• Follow bottle’s user guide for seating and priming before use

What certifications and test standards support its performance?

The purifier cartridge has been independently tested and laboratory certified to meet or exceed NSF-related protocols for pathogen and chemical reduction. Test results document high reduction rates for bacteria, viruses, and protozoan cysts along with measurable removal of chemical contaminants and tastes or odors.

• Independently tested and laboratory certified to meet NSF-style performance protocols
• Documented reductions for viruses, bacteria, and protozoa in lab testing
• Demonstrated adsorption of VOCs, PFAS-class contaminants, heavy metals, and unwanted flavors

Who is this for? The GRAYL UltraPress Replacement Purifier Cartridge is aimed at travelers, outdoor enthusiasts, emergency preppers, and everyday users who rely on the 16.9 fl oz UltraPress bottle for safe drinking water. Choose this replacement when you need continued certified performance: easy to install, compact for packing, and built to handle frequent use. If you own the UltraPress bottle and want verified contaminant reduction plus straightforward cartridge swaps, this replacement purifier maintains the bottle’s certified protection and taste-improving filtration.