OPL vs. GML
What is the difference between the OMRI Products List and the OMRI Generic Materials List?
The OMRI Products List consists of individual products sold by suppliers that have undergone the OMRI review process and have been found to conform to the National Organic Program Standards. This list can be searched online, downloaded from our website and can be found in the printed copy.
The OMRI Generic Materials List is a list of generic materials that specifies how they comply with the National Organic Standards. The Generic Materials List is divided into three main sections: Crop, Livestock and Processing. Within these three sections, products are further separated into Use Classes:
Crop Fertilizer and Soil Amendments (CF)
Crop Management Tools and Product Aids (CT)
Crop Pest Weed and Disease Control (CP)
Livestock Feed Ingredient (LF)
Livestock Health Care (LH)
Livestock External Parasiticide or Pesticide (LP)
Livestock Management Tool or Production Aid (LT)
Processing Agricultural Ingredient or Processing Aid (PA)
Processing Non-agricultural Ingredient or Processing Aid (PN)
Processing Pest Control (PP)
Processing Sanitizer or Cleaner (PS)
Processing Container and Packaging Material (PC)
Finally, within the Use Classes there are the Generic Material Categories. Products that are reviewed by OMRI and are listed on the OMRI Products List are reviewed to a use Class and Generic Material Category.