21 CFR § 112.124 - What requirements apply to instruments and controls used to measure, regulate, or record?

---
identifier: "/us/cfr/t21/s112.124"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 112.124 - What requirements apply to instruments and controls used to measure, regulate, or record?"
title_number: 21
title_name: "Food and Drugs"
section_number: "112.124"
section_name: "What requirements apply to instruments and controls used to measure, regulate, or record?"
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "B"
subchapter_name: "FOOD FOR HUMAN CONSUMPTION"
part_number: "112"
part_name: "STANDARDS FOR THE GROWING, HARVESTING, PACKING, AND HOLDING OF PRODUCE FOR HUMAN CONSUMPTION"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "21 U.S.C. 321, 331, 342, 350h, 371; 42 U.S.C. 243, 264, 271."
regulatory_source: "80 FR 74547, Nov. 27, 2015, unless otherwise noted."
cfr_part: "112"
---


# 112.124 What requirements apply to instruments and controls used to measure, regulate, or record?

Instruments or controls you use to measure, regulate, or record temperatures, hydrogen-ion concentration (pH), sanitizer efficacy or other conditions, in order to control or prevent the growth of microorganisms of public health significance, must be:

(a) Accurate and precise as necessary and appropriate in keeping with their purpose;

(b) Adequately maintained; and

(c) Adequate in number for their designated uses.