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Log In Search Main Navigation Shopping Cart Log in for more features We are currently experiencing some service outages and portions of our website may not be functioning properly at this time. Thank you for your understanding. Welcome to the Organic Materials Review Institute OMRI supports organic integrity by developing clear information and guidance about materials so that producers know which products are appropriate for organic operations. OMRI is a 501c3 nonprofit organization that provides an independent review of products such as fertilizers pest controls livestock health care products and numerous other inputs that are intended for use in certified organic production and processing.