Glassware Burets Flasks, Beakers, & Graduated Cylinders Pipets Repipets Volumetric Flasks Instruments Analytical Balance pH Meter: Analog pH Meter: Digital Spectrometer: Analog Spectrometer: Digital Spectrometer: Scanning Top-loading Balance Techniques Calorimetry Centrifugation Quantitative Transfer Titration Vacuum Filtration ChemLab Home		Digital Spectrometer A digital spectrometer measures the amount of visible light absorbed by a colored solution. This can be read as Absorbance or % Transmittance. Setting Up the Spectrometer First, check that the instrument is turned on. You will hear the fan and see light coming out of the right side of the instrument. Next press the A/T/C button to select Absorbance mode. The current mode appears on the display. Set the wavelength to the desired value using the nm and nm buttons. The wavelength is displayed on the LCD. Fill a curet with your blank solvent and dry the outside of the cuvet carefully. Insert your blank cuvet in the sample compartment and close the cover. Press 0 ABS/100% T to set the absorbance of the blank to zero. After a few moments the absorbance and wavelength will be displayed. The absorbance should be zero. Remove the blank and insert a dry sample cuvet. The absorbance value of the sample will now be shown on the LCD.
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