Final answer:
In the analytical phase of quality assurance, instruments are maintained and calibrated to ensure accurate results.
Explanation:
Calibration of instruments is a crucial aspect of quality assurance in the analytical phase of testing. During this phase, instruments used in the laboratory are regularly maintained and calibrated to ensure accurate and precise results.
Learn more about Calibration of instruments in quality assurance here:
https://brainly.com/question/38482374
