Figure 9 to absorb the light in accordance with the rules of the Lambert (lambert law).5.2.2 rules of beer (Beer law) rules of beer (r. 1852) says that light is directly absorb is proportional to the concentration of the substance in the liquid, which is the same as the rules of the Lambert will have the equation. It = I0 x 10-kc -----------------------(2) When combining the two rules together (Beer-Lambert's law) by adding equations (1) and (2) the equation. equation as follows:It = I0 x 10-εct -----------------------(3) But the light shines through (transmittance, T) is equal to 0, and the light It/I was suck (absorbance, A, or optical density, OD) is equal to log (I0/It). A = εct -----------------------(4)Or A =-log T---------------------(5)Ε = molar absorptivity values for each substance, the constant ε in the waves.There are mole-1cm-1. C = concentration of the substance in the unit mole/L. T = the thickness of the aqueous solution in the unit cm. 5.3 engine component specification calls fo Toh meter. (spectrophotometer components) The main components of a UV-testers call four grown boen specification parameters. There are 5 sections.1. the light source (light source)2. Select the wavelength (wavelength selector).3. rack (cell or cuvette).4. the detector (detector).5. recording and processing the results (recorder and processor).With all of the components are arranged as shown. Figure 10 diagram machine UV-testers call four grown boen specification simple meter.5.3.1 light source (light source)Light source in a call centre would need to grow a meter specification, radiation in the wavelength range that requires continuous and constant at all times. As well as having enough light intensity with wavelength in the ultraviolet range, for the deuterium lamp used.(Deuterium lamp) as a light source, light in the range of 185-375 nm. The principle is to make the deuterium atom is in a power state rather than to spit out. Best tubes, tungsten (tungsten filament lamp) provides comprehensive range of wavelength of light that is visible from the main 320-2500 nm is similar to an ordinary tungsten light bulbs, electric current to pass through until the summer and tungsten wire.Emitting radiation coming out will normally turn left about 30 minutes before use to make sure that the tube or lamp deuterium, tungsten, light intensity, uniform. Figure 11 lamp deuterium lamp tungsten (left) and (right).Section 5.3.2 selecting wavelength (wavelength selector).It is best used at a wavelength from the light source, which is light.Multiple-wavelength (wavelength polychromatic) light strips provide a narrow range or a single wavelength (monochromatic wavelength) instruments, "to use a Prism or a separate filter for wavelength change but current Mono chrome rame (monochromater) the graves, reflective, which is rotting (grating) has many small parallel Groove. The light from the light source to fall impact onto the surface of the Groove laeosathon out that the particular wavelength that we can only be selected through the light (exit slit) into the sample.
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