What does calibration refer to in a kitchen or laboratory setting?

• A. A process of sharpening tools
• B. The regular adjustment of tools to keep them accurate
• C. A check for expiration dates
• D. An error measurement

Answer: (B)

Calibration is the process of ensuring instruments give accurate readings by comparing them to known standards and making adjustments so the readings match those standards. In a kitchen or lab, accurate temperatures, weights, and other measurements are crucial for safety, quality, and consistency, so tools must be regularly calibrated.

For example, a thermometer is calibrated by placing it in an ice bath to verify 0°C and in boiling water to verify 100°C (adjusting for altitude if needed). A scale is checked against standard masses to confirm its accuracy, and a pH meter is set with standard buffer solutions. This is more than just checking for error—it’s about actively correcting the instrument so it stays true to measurement standards.

Sharpening tools, checking expiration dates, or merely measuring error without adjusting are different tasks, so they don’t define calibration.