Spectronic 20 Calorimeter
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SPECTRONIC 20 CALORIMETER
The Spectronic 20 is actually two instruments in one - a colorimeter plus a pectrophotometer. It's called a Spectronic 20 because of its narrow band pass (only 20 nm), which assures high spectral purity for dependable analysis.
The diffraction grating, 600 grooves per mm, provides monochromatic light throughout the 340 to 600 nm range. To extend the range from 600 nm to 950 nm, an infrared phototube and filter are quickly substituted. You ''tune-in'' any desired wavelength by merely turning a knob.
