There are two primary methods of manufacturing infrared quartz cuvettes: one involves bonding with adhesives, while the other involves high-temperature melting. The materials used are typically quartz, fused silica and optical glass. The glass cuvette absorbs almost all ultraviolet rays, exhibiting a notably high level of absorption. However, the absorption of quartz cuvettes is significantly lower. The standard shapes of cuvettes include square, rectangular and cylindrical forms, with capacities typically ranging from a few milliliters to a higher volume.

Please refer to the management regulations for infrared quartz cuvettes for guidance on their use.

(1) Upon picking up cuvettes, it is imperative to only make contact with the frosted glass on both sides with fingers, while ensuring that the optical surface is not touched. Simultaneously, it is imperative to exercise caution to avert any potential damage.

(2) It is inadvisable to store solutions containing substances that are capable of corroding glass for an extended period.

(3) It is susceptible to cracking when exposed to high temperatures; therefore, its heating over a flame, electric stove or in a drying oven should be avoided.

(4) In the event of contamination of the interior of the cuvette, it is imperative that it be cleaned with anhydrous ethanol, followed by thorough drying or wiping.

(5) It is vital that the light-transmitting surface is not exposed to hard or dirty objects.

(6) When holding the solution, the height should be two-thirds of the distance from the bottom to the top. Should there be any residual liquid on the optical surface, it can be gently adsorbed with filter paper before being wiped with lens paper or silk.

(7) The liquid in the cuvette should be tilted along the rough surface and poured out slowly. It is important to note that the cuvette should not be turned over. Please place it directly onto a clean filter paper, with the mouth down, to absorb the remaining liquid. Then rinse the inside with distilled water and pour it out (the operation is the same as above) to prevent the liquid from flowing out. This eliminates the need for wiping during the second measurement, thereby preventing errors that can arise from wiping.

(8) Prior to color comparisons, distilled water is filled in and compared at the colorimetric wavelength. Four to eight products with an error within ±0.001 absorbance are selected for colourimetric determination to avoid measurement errors caused by differences.

(9) Following use, it is essential to rinse the item clean with water without delay. If necessary, the item can be soaked in 1:1 hydrochloric acid and then rinsed clean with water.

(10) It is essential that it is stored in its original box to protect the surface from contamination or corrosion.

(11) It is essential that the liquid is immediately emptied from the cuvette after use. The cuvette must then be washed with an appropriate detergent, rinsed with distilled water, and then rinsed clean with anhydrous ethanol.

(12) It is recommended that the cuvette be cleaned on a regular basis using dilute acid. In the event of an unsatisfactory effect, the cuvette should be immersed in a mixture of concentrated hydrochloric acid, methanol and water (14:3) for one hour. It should then be rinsed clean.