I happen to have purchased a large 1 gallon jug of sanitizer produced by ArtNaturals, the brand with the highest concentration detected, from Costco in October.

I happen to have purchased a large 1 gallon jug of sanitizer produced by ArtNaturals, the brand with the highest concentration detected, from Costco in October. I’ve been using it daily ever since, and have even used it to refill the bottle of sanitizer in my car. Later today I am shipping it off to Valisure to be tested. They noted high variability in concentrations from batch to batch that they tested, so I’m hoping I got “lucky”. Edit: by "lucky", I mean I hope my sanitizer was not contaminated or the contamination was minimal, obviously! Odd I even need to state this.