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How to avoid the downsides of spectrophotometer? 

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To avoid the downsides of spectrophotometers, several precautions can be taken. First, it is important to test and ensure the accuracy of the spectral properties, such as wavelength accuracy, bandwidth, and stray light . Photometric linearity should also be checked to ensure accurate measurements . Interactions between the sample and the instrument, such as multiple reflections, polarization, and sample tilt, should be minimized to avoid errors . Calibration of master instruments is necessary, and the use of standards, such as emission lines and absorbing solid filters, can simplify performance checks . Additionally, using a xenon flash tube as a light source and setting appropriate integration window sizes can prevent saturation of the analog-to-digital conversion circuit and improve the signal-to-noise ratio . The design of the spectrophotometer, such as the use of a rotating rod and sliding seat, can also reduce deviations in measurement results . Overall, taking these precautions can help mitigate the downsides of spectrophotometers and improve their accuracy and reliability.

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The provided paper does not mention any downsides of a spectrophotometer or how to avoid them.
The provided paper discusses various precautions and methods to avoid errors in spectrophotometry, including testing spectral properties, ensuring photometric linearity, and addressing interactions between the sample and the instrument. Calibration of master instruments is also discussed.
The paper provides a method to avoid saturation of the analog-to-digital conversion circuit in a spectrophotometer by setting an appropriate integration window size for each wavelength.

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