U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 28, 2025
(a) [Reserved]
(b) Tolerances. The tolerances for ampicillin (marker residue for hetacillin) are:
(1) Cattle. Edible tissues: 0.01 ppm.
(2) [Reserved]
(c) Related conditions of use. See § 526.1130 of this chapter.
