Generic Materials Search: perlite

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View the OMRI Generic Materials List Glossary in PDF format here.
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Perlite
Allowed
Crop Fertilizers and Soil Amendments
Nonsynthetic
See MINED MINERALS – UNPROCESSED.
205.203(d)(2) A mined substance of low solubility.
Perlite
Allowed with Restrictions
Processing Non-agricultural Ingredients and Processing Aids
Nonsynthetic Nonagricultural
For use only as a filter aid in food processing.
205.605(a)