Raman spectroscopy is the measurement of the wavelength and intensity of inelastically scattered light from molecules. The Raman scattered light occurs at wavelengths that are shifted from the incident light by the energies of molecular vibrations. The mechanism of Raman scattering is different from that of infrared absorption, and Raman and IR spectra provide complementary information. Typical applications are in structure determination, multi-component qualitative analysis, and quantitative analysis.
Labware, test and measurement equipment describes a category of devices that are used to test, analyze, control, calibrate, display and record data in laboratory and other testing situations. The major families within this category are analytical instruments, chromatography instruments, environmental instruments, lab and test equipment, multimeters and electrical test meters, process controllers, product and material testers, panel meters, recorders and loggers, sample preparation and wet chemical analysis, separation devices, sensing and measurement instruments, spectrometers and analytical photometers, and water quality instruments.
Analytical instruments are a wide classification of devices that are used to analyze material samples, or their components, and record data specific to the application. Many of the areas within this family are covered in detail throughout the instrumentation and lab/test equipment category. Some of the major devices within this family are calorimeters and thermal analyzers, capillary electrophoresis separators, centrifuges, conductivity electrodes and other conductivity instruments, density and specific gravity equipment, gas testers and analyzers (the most common being those designed to test for levels of carbon dioxide (CO2) and oxygen (O2), although other general and specific gas testers are available), durometers and other hardness testing instruments, environmental test chambers, laboratory filters, fluorometers, hydrometers, ION specific electrodes and meters; moisture, humidity and dew point analyzers, pH and ORP devices, rheometers, spectrometers, surface area and tension instruments, turbidity and opacity testers, and water quality meters.