# Cell Walls of Saccharomyces Cerevisiae; Tolerance Exemption
> **Rule** · Final rule. · Published 2022-05-05 · Effective 2022-05-05 · 87 FR 26691
## Document
- **Document number:** 2022-09622
- **Category:** pesticide
- **Federal Register citation:** 87 FR 26691
- **CFR reference:** 40 CFR 180
- **Publication date:** 2022-05-05
- **Effective date:** 2022-05-05
- **EPA docket:** EPA-HQ-OPP-2018-0545
## Abstract

This regulation establishes an exemption from the requirement of a tolerance for residues of cell walls of Saccharomyces cerevisiae (also known as yeast cell walls or YCWs) when used as a carrier inert ingredient in pesticide formulations in pre-harvest applications to crops. SciReg, Inc., on behalf of Eden Research, submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of cell walls of Saccharomyces cerevisiae on food or feed commodities when used in accordance with this exemption.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2022/05/05/2022-09622/cell-walls-of-saccharomyces-cerevisiae-tolerance-exemption)
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