Notice

Notice of New Year's Day holiday in 2023

Holiday from January 1st to January 2nd, 2023,

Normal work on January 3, 2023.

Shanghai Spectral Analysis Instrument Co., Ltd., a manufacturer of spectrophotometers, wishes new and old customers and all employees a happy New Year and good health.

Appendix

Principle

The principle of spectrophotometric analysis is to use the selective absorption phenomenon of substances towards different wavelengths of light for qualitative and quantitative analysis of substances. By analyzing the absorption spectrum, the structure and chemical composition of substances can be determined. Using a prism or grating to separate monochromatic light, the monochromatic light is continuously passed through a solution in sequence, and the absorption of each wavelength by the solution is measured to obtain the absorption spectrum curve.

This instrument operates based on the principle of relative measurement, which involves selecting a solvent (distilled water, air, or sample) as the reference solution and setting its transmittance (i.e. transmittance T) to 100%. The transmittance of the tested sample is obtained relative to the reference solution. The change in transmittance (transmittance T) has a certain functional relationship with the concentration of the measured substance, and within a certain range, it conforms to the Lambert Beer law.

purpose

It can be used for scientific research in disciplines such as physics, chemistry, medicine, biology, pharmacology, geology, etc. It is one of the important quality control instruments widely used in industries such as chemical engineering, pharmaceuticals, biochemistry, metallurgy, light industry, materials, environmental protection, medical laboratory testing, and analysis. It is also used in routine laboratoriescommonly usedInstruments.