Which pipet category does not require calibration?

Which pipet category does not require calibration?

• A. TD pipets
• B. TC pipets
• C. Class A pipets
• D. None

Answer: (C)

Pipette accuracy is tied to whether the device is factory-certified to a high accuracy class. Class A pipettes are produced to strict ISO tolerances and come with a calibration certificate stating they meet those standards. Because their calibration is established at the factory and traceable, routine user recalibration isn’t required for normal use, though periodic verification as part of quality control is still good practice. In contrast, TD and TC descriptions specify delivery or containment behavior and typically imply the need for calibration checks to ensure the delivered or contained volume remains within spec. Therefore, the best choice is Class A, since it denotes a device delivered with factory-calibrated accuracy.

Pipette accuracy is tied to whether the device is factory-certified to a high accuracy class. Class A pipettes are produced to strict ISO tolerances and come with a calibration certificate stating they meet those standards. Because their calibration is established at the factory and traceable, routine user recalibration isn’t required for normal use, though periodic verification as part of quality control is still good practice. In contrast, TD and TC descriptions specify delivery or containment behavior and typically imply the need for calibration checks to ensure the delivered or contained volume remains within spec. Therefore, the best choice is Class A, since it denotes a device delivered with factory-calibrated accuracy.