GO-3® Water Purifiying Cap Meet the GO-3, (Pronounced Go Three) , the world's first travel water purifier that purifies water directly in the bottle using the "Power of EO3®," our patented electrolytic ozone technology. Designed to fit Nalgene wide-mouth 1L water bottles (32 oz) and the Nalgene® 650 mL "On the Fly" bottle, the GO-3 transforms your favorite reusable bottle into a powerful water purification system. Please note: the GO-3 is compatible only with Nalgene®-brand bottles.

To Use: Fill your Nalgene bottle with clear water. Attach the GO-3 cap, turn the bottle upside down, and press the power button. Wait 3 minutes for the ozone purification cycle to complete. (Light shows a blue color) Wait another 3 minutes (light flashes yellow) Light turns green - you are good to go! After treatment, your water is safer to drink, with a fresh, clean taste. The GO-3 effectively neutralizes harmful microbes and eliminates unpleasant odors.

Features: Advanced Technology:

The GO-3 is powered by electrolytic ozone, a technology stronger than chlorine in neutralizing harmful microbes. Ozone quickly reverts to oxygen, leaving no chemicals behind.

Easy Integration:

Designed exclusively for Nalgene wide-mouth bottles, including the 1L and 650mL "On the Fly" models, it’s perfect for travel, hiking, or everyday use.

Eco-Friendly & Sustainable:

Say goodbye to single-use plastic bottles. The rechargeable battery powers up to 40 purification cycles per charge, reducing waste and ensuring clean water wherever you go.

Improved Design:

Thanks to customer feedback and the help of Georgia Pacific, the GO-3 now features wireless charging, better communication of charge state and operation, and a more robust build. Proudly assembled in Pulaski, Wisconsin, the GO-3 combines domestic and foreign components to deliver exceptional quality.

Why Choose the GO-3? Safer Water, Everywhere:

From hotel sinks to mountain streams, the GO-3 ensures your water is safe to drink, smell, and taste great.

Portable & TSA-Compliant:

Carry it in your carry-on luggage and purify water directly from your bottle, wherever your adventures take you.

Fast Shipping:

Orders placed in the morning usually ship the same day, with 2-5 day delivery for most locations. Need it faster? Select Overnight or 2-day shipping at checkout.

Risk-Free Purchase:

Buy with confidence, backed by our 100% no-questions-asked money-back guarantee.

Beware of False Dealer ADS on Walmart and Otics Planet : Do not purchase from Optics Planet. They are not a dealer and they do not stock our products. They have posted ads online showing our products at cheaper prices. Then they inform their customers that we have discontinued the product. This is not true! We are here and stand behind our products.

With the GO-3, you can drink confidently wherever you are, because "The World is Your Water Bottle™."

GO3 Ozone Water Purifying Cap (Cap Only)