Single/multi Ingredient Products

Only products that contain a single substance in the final product are single ingredient products. For example, a microbial product composed of a single microorganism without any media in the final product is a single ingredient product. You would still list the growth media on the Total Ingredient List, but you would enter 0% in the amount column to indicate the growth media is completely removed from the final product. Water (or moisture) does not count as an ingredient while calculating the fee.

A multi-ingredient product has more than one ingredient in the final product. This means the Total Ingredient List will have two or more ingredients that are greater than 0% in the final product. For example, a blended fertilizer with blood and bone meals is a multi-ingredient product because the product contains multiple ingredients.

Each ingredient should be expressed on the Total Ingredient List provided in your Application Kit. There are examples of both single and multi-ingredient Total Ingredient Lists when you log into the website and navigate to the Individual Forms and Checklists page in the right hand Applicant Menu. There is also an example Compost Application on the Application Support Downloads page.

OMRI product review fees are based on the ingredients listed on the Total Ingredients List (or on the EPA CSF Form 8570-4 for pesticides). If your product is submitted with a payment for a single ingredient product review and the product is considered multi-ingredient, the review will not begin until full payment is received. If you overpay, OMRI will refund the difference. If you have any questions, please contact OMRI.