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What is OMRI listing?

Coir glossary · Updated 2026-09-22

Certification by the Organic Materials Review Institute confirming that a product is allowed for use in USDA National Organic Program production. OMRI-listed coir products can be used as growing media in certified organic farms and greenhouses. OMRI reviews product composition, manufacturing aids and any additives against the National List of allowed substances.

OMRI listing: equivalents.

PT: listagem OMRI · ES: listado OMRI

Source: OMRI. Definition from the Carve coir glossary, where the full source list is given.

Related terms.

Washed grade: Coir pith washed with fresh water to reduce soluble salt content.

RPP (Responsibly Produced Peat): Certification for peat sourced under environmental and social sustainability criteria, including site restoration…

See also: Coir pith from Brazil: specification checklist · back to the coir glossary.

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About this page. Part of the coir glossary maintained by Carve Biorrefinaria Agroindustrial Ltda, a coir pith and fiber producer in Paraipaba, Ceará, Brazil. Corrections: [email protected].