Grayl GeoPress® Replacement Purifier Cartridge
The Grayl GeoPress® Replacement Purifier Cartridge provides powerful, fast, and reliable filtration and purification for international travel, remote deployments, and survival operations. Designed to neutralize threats in suspect water sources—from hotel taps in less developed regions to silty streams in austere environments—it ensures your team stays hydrated and protected across every mission.
"A prudent person foresees danger ahead and takes precautions. The simpleton goes blindly on and suffers the consequences. - Proverbs 27:12"
Proven Global Protection
Removes 99.99% of viruses, 99.9999% of bacteria, and 99.9% of protozoan cysts including Rotavirus, Hepatitis A, Norovirus, E. coli, Giardia, and Cryptosporidium.
Advanced Contaminant Removal
Filters sediment and microplastics, and adsorbs heavy metals, PFAS, VOCs, pesticides, herbicides, and unpleasant tastes or odors using ultra-powdered activated carbon.
Fast Press Time
Produces 24 oz of clean water in just 8 seconds (5L/min flow rate), even in challenging environments.
One-Way Valve Compatible
Allows safe use with electrolyte drink mixes, critical for rehydration in hot climates or operational deployments.
Rugged & Reliable
Each cartridge is rated for 350 presses (65 gal / 250L) and continues to function safely as press time increases, with a 10-year shelf life when stored properly.
Remove the used cartridge by unscrewing it counterclockwise from the GeoPress Inner Press.
Install the new cartridge by aligning and rotating clockwise until fully locked in place.
Press as normal to produce purified drinking water.
If using drink mixes, insert One-Way Valve prior to use.
The numbers, flat and honest.
| Compatibility | Fits all GeoPress® bottles |
|---|---|
| Active Technology | Electroadsorption + ultra-powdered activated carbon |
| Removes | Viruses (99.99%) Bacteria (99.9999%) Protozoa (99.9%) Contaminants: sediment, microplastics, PFAS, VOCs, pesticides, herbicides, heavy metals |
| Flow Rate | 8 seconds per 24 oz (5L/min) |
| Cartridge Lifespan | 350 presses / 250L (replace when press time exceeds 25–30 sec or after 3 years) |
| Shelf Life (Unopened) | 10 years |
| Size | 2.9" H × 3.1" W (7.3 × 7.8 cm) |
| Weight | 3.8 oz (108 g) |
| Materials | ABS food-grade plastic, food-grade silicone |
| Chemical-Free Operation | Yes |
| Tested To | NSF/ANSI 42 & 53, EPA Microbiological Purifier Standard |
| Origin | Cartridge media made in USA; cartridge assembled in China |
WHY YOU’RE BUYING FROM STAY READY.
We aren’t the Amazon of survival. We’re a small, opinionated shop that carries gear we’d stake our own lives on — and we back every piece with real support.
Curated
Every brand we carry has been vetted in the field by our team. If it doesn’t pass our 30-day use test, we don’t stock it.
Authenticated
Factory-direct from authorized dealers. No grey-market, no refurb, no knockoffs. Your warranty is real.
Supported
Real humans on phone, text, and email — seven days a week. We carry this gear ourselves and we stand behind it.
American
HQ in California. Orders ship from our US warehouse. US-based customer care.
PRESS-TO-PURIFY WATER BOTTLES
From a Seattle napkin sketch to the fastest, easiest portable water purifier in the world.
GRAYL started as a napkin sketch in a Seattle bar — an obsession with making the perfect portable water purifier. The first Kickstarter raised over $250,000, and today GRAYL's GeoPress and UltraPress let you press-purify water from streams, hotel sinks, wells, and lakes in seconds. The mission is straightforward: empower adventure with clean, safe water anywhere. A minimum of 1% of every sale goes to environmental charities and non-profits.
- Founded in Seattle, Washington
- Originated from a napkin sketch in a hometown Seattle bar
- Kickstarter campaign raised over $250,000
- GeoPress and UltraPress — press-to-purify in seconds
- 1% of every sale donated to environmental nonprofits
Answers, straight up.
Product-specific questions on the left. Shopping with SRO on the right. Both open-ended — hit us if we missed one.
How long does shipping take?
Most orders process within 1–3 business days from our warehouse. From there: 5–7 business days economy, 2–3 business days expedited, or overnight if you need it fast. Free economy shipping on orders over $150 (contiguous US). Alaska, Hawaii, and Pro Eagle / freight items are quoted at checkout. You’ll get a tracking number and link the moment your order ships.
What’s your return policy?
30 days from the day your order arrives. Gear has to come back unused, with all original tags, stickers, and packaging intact. For standard items we’ll send a prepaid return label and deduct return shipping from your refund. Oversized or freight returns are on you, unless the item showed up damaged, defective, or wrong — in which case we cover it.
Refunds hit your original payment method within 10 business days of approval.
What can’t I return?
Final-sale items, gift cards, food and drink products, personal-care items, anything customized or engraved, briefs (hygiene), and hazardous materials. If you’re not sure whether something qualifies, email us before you order — we’ll tell you straight.
Do you ship outside the contiguous US?
Yes. Alaska, Hawaii, and US territories ship on freight-quoted rates calculated after checkout. International orders are available worldwide at variable rates; duties and import fees are the customer’s responsibility. EU customers get a 14-day cancellation window per EU consumer law, on top of our standard return policy.
My package arrived damaged — what now?
Email info@stayreadyoutdoors.com within 7 days of delivery with your order number and clear photos of the damage (product + packaging). We’ll replace, refund, or ship a return label on us — no back-and-forth. Damaged, defective, or wrong-item claims never cost you shipping.
Can I talk to a human before buying?
Yes. Email info@stayreadyoutdoors.com — we answer every message ourselves, usually within a few hours during business days. We carry this gear, we use this gear, and we’d rather talk you out of a kit that doesn’t fit your mission than sell you the wrong one.
Do you offer a military/first-responder discount?
Yes. Active-duty and veteran military, police, fire, EMS, and medical first responders get 15% off every order. Verify through GovX at checkout — one-time, secure, and reusable across thousands of brands. Discount applies automatically once you’re verified.