OMRI Generic Materials List
The OMRI Generic Materials List© is a catalog of over 900 substances that are Allowed, Allowed with Restrictions, or Prohibited for use in organic agriculture and food processing.
Based on the National Organic Program, this publication serves as a reference guide for organic farmers, handlers, processors, inspectors, certifiers, agricultural professionals, and all others with an interest in materials for use in organic production. You are welcome to view a few sample pages here: Download Sample Generic Materials List
Update Available
In July, 2012 OMRI updated its standards to incorporate changes in the policies of the National Organic Program. These changes will be included in the next printed version of the Generic Materials List. In the meantime, please download the Addendum as a PDF here: Download Generic Materials List Addendum