Compact Guardian Gravity Water Purifier for Backcountry, Travel, and Emergency

In 1969, Seattle engineer and lifelong mountaineer Larry Penberthy founded Mountain Safety Research as a one-man crusade dedicated to improving the safety of climbing equipment. The driving force behind Larry's passionate endeavor was a simple belief that still inspires our team today: the idea that better, safer, and more reliable equipment is the key to unlocking greater adventures.

Designing for Durability and Longevity is a core principle at Mountain Safety Research. We build products to last, offering outdoor enthusiasts more adventures and reducing the amount of goods piling up in landfills. Our first priority is to design and manufacture durable, long-lasting products. Extensive testing, both in-house and in the field, allows us to ensure that our products will withstand the wear and tear to which our customers subject their gear. Our products have stood the test of time, and we often hear stories from customers who are still using MSR stoves from the 1980s. We believe in what we make and stand behind it.

Mountain Safety Research offers a wide range of outdoor gear, including Tents, Stoves, Water Treatment, Cookware, and Snowshoes. Our state-of-the-art water purification systems, such as the MiniWorks EX Microfilter, Guardian Purifier, and AutoFlow XL Gravity Filter, provide advanced, high-volume gravity filtration that removes viruses (99.99%), bacteria (99.9999%), protozoa (99.9%), sediment, and microplastics from "worst-case" water conditions. These products are equipped with activated carbon to reduce chemicals, unpleasant tastes, and odors, and are designed to be fast and easy to use, with the capability to purify up to 1 liter of water in just 2 minutes.

Our water treatment solutions have earned high customer ratings, with the MiniWorks EX Microfilter, Guardian Purifier, and AutoFlow XL Gravity Filter receiving 4.6, 4.7, and 4.8 out of 5 stars, respectively, from numerous reviews. These products are designed to meet the most stringent testing standards, including NSF P231 and P248, ensuring their effectiveness in removing harmful contaminants from water.

At Mountain Safety Research, we are committed to providing outdoor enthusiasts with the best possible gear to support their adventures. Our focus on durability, longevity, and advanced water purification technology sets us apart, and we take pride in the positive feedback we receive from our loyal customers.

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