Mirrors and gratings: The optical components inside the monochromator, such as mirrors and diffraction gratings, should be kept clean. Dust, dirt, or fingerprints can affect the reflectivity and accuracy of the monochromator.
Avoid exposing the monochromator to harsh environments (e.g., dusty or humid areas) to reduce the frequency of cleanings.
Vibration control: Ensure the instrument is placed in a vibration-free area to prevent mechanical strain on the optical components.
Physical wear or damage: If the grating, mirrors, or mechanical components show visible signs of wear, such as scratches, corrosion, or misalignment that cannot be corrected, replacement is necessary.
