7 CFR §51.2956
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Practically clean means that, from the viewpoint of general appearance, the walnuts are practically free from adhering dirt or other foreign matter, and that individual walnuts are not damaged by such means. A slightly chalky deposit on the shell is characteristic of many bleached nuts and shall not be considered as dirt or foreign matter.