# Polyammonium Bisulfate; Exemption From the Requirement of a Tolerance
> **Rule** · Final rule. · Published 2022-03-03 · Effective 2022-03-03 · 87 FR 11965
## Document
- **Document number:** 2022-04368
- **Category:** pesticide
- **Federal Register citation:** 87 FR 11965
- **CFR reference:** 40 CFR 180
- **Publication date:** 2022-03-03
- **Effective date:** 2022-03-03
- **EPA docket:** EPA-HQ-OPP-2021-0292
## Abstract

This regulation establishes an exemption from the requirement of a tolerance for residues of Polyammonium bisulfate (PABS) (CAS Reg. No. 10043-02-4), herein referred to as PABS, when used as an inert ingredient (carrier, adjuvant, buffer and stabilizer) in/on growing crops and raw agricultural commodities pre- and post-harvest, limited to 40% in pesticide non-residential formulations and 5% in pesticide formulations for residential use. An exemption is also established for its use in antimicrobial formulations applied to food-contact surfaces in public eating places, dairy-processing equipment, food-processing equipment and utensils, limited to 250 parts per million (ppm). Spring Regulatory Sciences on behalf of Earth Science Laboratories, Inc., submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting the establishment of exemptions from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of PABS.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2022/03/03/2022-04368/polyammonium-bisulfate-exemption-from-the-requirement-of-a-tolerance)
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