There is no standardized definition for purity protocol oats*.
As a result, not all oats promoted by suppliers as purity protocol are the
same. At this time, Gluten Free Watchdog includes four companies in our listing
of suppliers providing purity protocol oats to manufacturers, namely Avena
Foods, GF Harvest, Montana Gluten-Free Processors, and Glanbia Nutritionals.
You can read about their protocols at https://www.glutenfreewatchdog.org/news/oats-produced-under-a-gluten-free-purity-protocol-listing-of-suppliers-and-manufacturers/
*GFCO along with representatives from Avena Foods, GF Harvest, Montana Gluten-Free Processors, and Cream Hill Estate (no longer in business) co-authored a […]