How Do You Know It Works – Grayl Water Filters

This is in response to a question asked in the comments of our Grayl water filters review. We were asked if we tested the water before and after it was filtered… and if we didn’t then how could we know that the filter works and isn’t a scam.

We asked Grayl for independent lab verification of their filter ability claims. We also found a blog post by Widener’s about testing that they sponsored on the Grayl Ultralight and other water filters too.

Here’s the link to Widener’s blog post about Water Filter Tests for Survival: https://www.wideners.com/blog/water-filter-tests-for-survival/

Widener’s testing showed that the Grayl did filter out what it said it would.

This is the link to our video review of the Grayl Water Filters: https://youtu.be/WBDrmggGELE

PRODUCTS IN THIS VIDEO
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Grayl Ultralight water filter, 16 oz: https://amzn.to/2XpRLTg
Grayl Geopress water filter, 24 oz: https://amzn.to/3e3B5XH

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