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Spectrophotometer
Spectrophotometer
Spectrophotometer is a photometer that can measure the intensity of light of a definite wavelength transmitted by a substance or a solution, thus providing a measure of the amount of material in the solution absorbing the light. Spectrophotometer is an instrument also used for measuring and comparing the intensities of common spectral lines in the spectra of two different sources of light.

Perhaps the most common application of spectrophotometers is the measurement of light absorption, but they can be designed to measure diffuse or specular reflectance. Strictly, even the emission half of a luminescence instrument is a kind of spectrophotometer.

The spectrophotometer measures quantitatively the fraction of light that passes through a given solution. In a spectrophotometer, a light from a lamp in a near-ir/vis/uv spectrophotometer (typically a deuterium gas discharge lamp) is guided through a monochromator, which picks light of one particular wavelength out of the continuous spectrum. This light passes through the sample that is being measured. After the sample, the intensity of the remaining light is measured with a photodiode or other light sensor, and the transmittance for this wavelength is then calculated.

Wide spectrum range of spectrophotometer is available in the market that is classified according to the wavelengths they work with. There are two major kind of spectrophotometers- single beam spectrophotometer and double beam spectrophotometer are available in the market. A singe beam spectrophotometer measures the ratio of absolute light intensity and the double beam spectrophotometer measures the ratio of the light intensity on two different light paths. Although ratio measurements are easier, and generally stabler, single beam instruments have advantages; for instance, they can have a larger dynamic range.

The most common spectrophotometer is used in the uv and visible regions of the spectrum, and some of these instruments also operate into the near-infrared region as well. Spectrophotometer that is designed for the main infrared region is quite different because of the technical requirements of measurement in that region. One major factor is the type of photosensors that are available for different spectral regions, but infrared measurement is also challenging because virtually everything emits ir light as thermal radiation, especially at wavelengths beyond about 5 µm.

Historically, spectrophotometers use a monochromator to analyze the spectrum, but there are also spectrophotometers that use arrays of photosensors and, especially in the ir. There are spectrophotometers that use a fourier transform technique to acquire the spectral information in a technique called fourier transform infrared.

This scientific instrument is preferred extensively in colorimetric science and in ink manufacturing, printing companies and by textiles vendors. Uv spectrophotometer and ir spectrophotometer that are designed for infrared region are quite different because of the technical requirement of the measurement in the region.

Spectrophotometer is used in medical chemistry, food processing, environmental labs, quality control labs, biochemistry labs, dna/rna testing, water analysis labs, pharmaceutical labs, agriculture labs, chemistry labs, petrochemical labs, hospital and research labs.



Spectrophotometer
SPECTROPHOTOMETER
Presenting unico's model 1200 spectrophotometer with a 5 mm narrow bandwidth offers accuracy, reliability and a range of accessories, model 1200 functions in the visible range of 325-1000 mm. There are multiple types of cuvette and test tube holders ... Click here for more info
Company Name : Supercon Equipments Pvt Ltd
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SPECTROPHOTOMETER FOR COLOUR MEASUREMENT
Presenting spectrascan 5100 a state-of-the-art dual beam spectrophotometer for colour measurement. It is extremely rugged in construction and very accurate in performance. Spectrascan 5100 is the result of the company's own in-depth study and sophist ... Click here for more info
Company Name : Premier Colorscan Instruments (exports)
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Spectrophotometer, Indian Manufacturer, Indian Supplier, Indian Exporters