Home › CFR › Title 7 › Part 51 › §51.13537 CFR §51.1353 — Firm.Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkFirm means that the pear is fairly solid and yields only very slightly to moderate pressure, and is not wilted, shriveled, rubbery or flabby.