40 CFR § 180.1321
Complex Polymeric Polyhydroxy Acids; exemption from the requirement of a tolerance
June 9, 2020
An exemption from the requirement of a tolerance is established for the residues of complex polymeric polyhydroxy acids in or on all food commodities when applied as a plant growth regulator and used in accordance with good agricultural practices.
[78 FR 46267, July 31, 2013]