Description
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Digital Colorimeter
Description
The basic set-up of the colorimeter is:
LED light source: Produces polychromatic light over the entire visible region, 45
Broad spectrum filter: The colorwheel has nine different filters.
The filter employed is selected by wavelength. Each filter will produce monochromatic light at a specified peak wavelength with a bandpass of 20 mm.
The filters enable the user to perform tests from 400 to 680 nm.
Cuvette Holder: It holds the inserted cuvette during testing.
It is imperative the cuvette be consistently oriented in the holder.
Round cells usually have orientation markings to correctly position the cuvette.
Detector: A silicon photo diode is used as the detector.
The photo detector current will change as a function of light energy.
Display:The current signal from the detector is converted to a numerical value, absorbance and is shown on led display
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