In this video, I break down exactly how the GRAYL Purifier Cartridge works — from electro-adsorption and activated charcoal to the real science separating it from traditional “size exclusion” filters. Then I take it to the field for a hands-on demo at the creek to show you how to use the GRAYL Ti GeoPress properly.
If you’ve ever wondered why this purifier stands above the rest, this one’s for you.
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