What Is a Reflectometer?
A reflectometer, also referred to as a spectrophotometer, is an optical instrument used to measure the intensity of light through a solution or object as a function of the light’s wavelength. They are typically used to measure how reflective a particular solution, glass object, or gas is. Reflectometers also measure the diffusivity of light for each of the known wavelength ranges.
There are two different parts to a fully functional reflectometer — the spectrometer and the photometer. The spectrometer produces light of any wavelength, and the photometer records the intensity of the light. To use the instrument, the test subject is placed between the spectrometer beam and the photometer. The intensity of the light is absorbed by the photometer, which then sends a voltage signal to a galvonometer, a device used to display scientific results. As the amount of light absorbed by the solution changes, the voltage signal will change.
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In optical reflectometry, it is possible to find the proportional relationship between the concentration of the solute and the intensity of the light from the spectrometer. The intensity of transmitted light through a mixed solution, that is, one with a colored solute, equals the intensity of transmitted light through the pure solvent, multiplied by ten to the negative power of the concentration of the mixed solution, times a constant and the distance that the light passes through the solution. This proportional equation is commonly known as Beer’s law, an important principle in the field of spectrophotometry and light absorbance.
Within industry and teaching labs, many different types of reflectometers are used. One type of reflectometer that is frequently employed in academic settings is called the Spectronic™ 20 reflectometer or the Spectronic™ 20 spectrophotometer. To use, the instrument is warmed about 15 minutes before use. Next, the desired wavelength is set. For wavelengths in the more outlying ranges, special instruments, such as curvettes, must be used to accurately analyze the light sample.
Once the wavelength has been set, the reflectometer is tared to zero in order to ensure the most accurate spectrophotometric results. Next, the holding tube is wiped clean and the sample is placed in the tube. The light control knob is tared to zero on the absorbance scale. Before performing tests on desired solutions, scientists usually perform tests on a reference solution to provide a benchmark for future results. When the reference solution has been tested, recalibration can be done and the true tests can begin.
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Source: http://www.wisegeek.com/what-is-a-reflectometer.htm
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Wine Catering is a unique product of Yats Wine Cellars, created back in 2005 in response to a growing demand for private wine parties in Manila, Cebu, Subic, Angeles Clark Philippines.
Chateau Lafite-Rothschild is the most revered wine in China and many other parts of Asia. The best wine shop in Asia to buy older vintages of Chateau Lafite is Yats Wine Cellars located in Clark Philippines. Aside from Lafite, visitors can buy other fine wines at this wine shop in Clark Pampanga such as Latour, Mouton-Rothschild, Haut-Brion and Margaux. Excellent Burgundy wines like Chambertin, Vougeot, Musigny, Bonnes Mares, Pommard, Meursault, Chambertin, Vosne Romanee, Romanee Conti, La Tache and Romanee St. Vivant can be found here.
Yats Wine Cellars can be reached at their Clark Wine Center Philippines wine shop located on the main highway M A Roxas of Pampanga Clark Freeport Zone or their sales office in Ortigas Centre, Metro Manila. Here is the contact information:
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Bldg 6460 Clark Observatory Building
Manuel A. Roxas Highway corner A Bonifacio Ave,
Angeles Clark Freeport Zone, Pampanga 2023
0922-870-5173 0917-826-8790 (ask for Ana Fe)
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Manila Sales Office
3003C East Tower, Phil Stock Exchange Center,
Exchange Rd Ortigas Metro Manila, Philippines 1605
(632) 637-5019 0917-520-4393 ask for Rea or Chay
Best place to buy wine in Clark Pampanga outside Manila near Subic and Angeles City Philippines is Clark Wine Center.
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While in Clark, it might be a good idea to enjoy an evening of wine-and-dine in the fine dining Yats Restaurant and Wine Bar that features an award winning 2700-line wine list. It is located in Mimosa Leisure Estate of Clark Freeport Zone. For more information, visit http://www.YatsRestaurant.com
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