Optical Analysis Instruments

Light energy interacts with substances in very specific ways, which can be used as a means of measuring chemical composition. Either the sample of the substance to be analyzed is stimulated to emit light, termed photoemission, or it is made to absorb light from an external light source, named photoabsorption. The specific frequencies of light obtained from these analyses can be used to identify the chemical elements and compounds present in the sample, and the relative intensity of each spectral pattern indicates the concentration of those elements and compounds.

The frequency of the light required to raise the energy level of the electrons and the frequency of the light emitted by these atoms as the electrons fall back to their original energy level constitute the unique "optical fingerprint" used to identify the element. The molecules have their own unique interactions with light. Therefore, by exposing a sample to light and analyzing the wavelengths absorbed by the sample, it is possible to quantitatively measure the concentration of certain molecules in the sample.

Optical analysis techniques use optical instruments to measure, analyze, and characterize samples and are widely used in materials science, chemistry, biology, and environmental science. Common optical analytical instruments include spectrophotometers, fluorescence photometers, Raman spectrometers, optical sensors, and so on. Amerigo Scientific offers a wide range of optical analytical instruments, as well as their accessories, including cuvettes to aid in the analysis of liquid, solid, semi-solid, and gaseous samples, a variety of optical materials such as ATR prisms and lenses, and various lamps for photoionization detectors.

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