How does a Spectronic 20 work?
The Spectronic 20, often called the Spec 20, is a spectrophotometer. A spectrophotometer measures the intensity of a light beam before and after it passes through a sample and compares these two intensities. The Spec 20 reports two types of measurements: percent transmittance and absorbance.
What is the readout device of spectronic 20d?
The Bausch & Lomb Spectronic 20 colorimeter uses a diffraction grating monochromator combined with a system for the detection, amplification, and measurement of light wavelengths in the 340 nm to 950 nm range.
What spectronic 21?
SPECTSPECTRONIC 21 Digital Model with UV Capabilities features linear digital readouts in % T, A, and concentration; push-button decimal selection; and an RS-232 interface port. Three-position sensitivity switch and the 100% T/zero A control let you select desired instrument gain setting.
How does a SpectroVis work?
How Does the SpectroVis Plus Work? Light from the LED and tungsten bulb light source passes through a solution. Emerging light goes through a high-quality diffraction grating, then the diffracted light is collected and sorted by the CCD array detector.
How do you use a digital spectrophotometer?
Procedure:
- Select a blank cuvette and place it in the spectrophotometer. Close the lid.
- Click on 0 ABS 100%T button, the instrument now reads 0.00000 A.
- Choose a solution with known concentration and measure the absorbance between the wavelengths 350 nm to 700 nm.
- Record the wavelength at the maximum absorbance value.
What does a spectrophotometer directly measure?
Spectrophotometry is a standard and inexpensive technique to measure light absorption or the amount of chemicals in a solution. It uses a light beam which passes through the sample, and each compound in the solution absorbs or transmits light over a certain wavelength.
How do you maintain your photometer?
Photometers should be regularly cleaned to ensure that your instrument is reading correctly and is not affected by dust or water marks. To clean a compact or Lumiso photometer, place a small amount of anti- static cleaning foam on to a lint free cloth and wipe the instrument.