After use, the cuvette should be rinsed with your solvent, paying attention to both the inside and outside. If the solvent is non-toxic, you can fill it halfway with solvent, hold both ends of the cuvette with your fingers, and shake vigorously at least three times.

　　Then rinse with plenty of tap water. This step is very important for aqueous and salt solutions. Of course, this step can be omitted if the solvent used is not hydrophilic.

　　Finally, rinse with deionized water, paying attention to both the inside and outside. This step can also be omitted if the solvent is not hydrophilic.

　　After washing, do not deliberately dry the cuvette. Place it loosely in the cuvette box and leave it to air dry naturally without covering it. The washed cuvette should be transparent and free of water marks. Ultrasonic cleaning is usually only used when the cuvette is extremely dirty; otherwise, it is generally not necessary.