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Spectrophotometers - Analog and Digital, Thermo Spectronic® 20+ and 20D+

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The Thermo Spectronic® 20+ and 20D+ are compact, easy to use spectrophotometers, which are ideal for a wide range of laboratory and classroom applications. Both instruments feature a solid state detector, which covers the entire 340 to 950nm wavelength range and eliminates the need to replace phototubes. Simply turn the dial to the desired wavelength and use the filter selection lever in order to prepare the instrument for taking measurements. The sample compartment holds a wide variety of cuvettes, adapters, and test tubes to perform a wide range of chemical tests. Sample volumes as small as 0.75 mL can be used, which reduces waste and lowers the cost of reagents. The Thermo Spectronic 20+ is an analog instrument with photometric ranges of 0 to 100% transmittance (T) and 0 to 2 absorbance (A). Both models offer a spectral slit width of 20nm. The Thermo Spectronic 20D+ is a digital instrument with an easy to read display and three photometric ranges: 0 to 100% T, 0 to 1.95A, and 0 to 1999 concentration (C). The concentration mode eliminates the need to plot standard curves for each analysis. Simply set the concentration with a standard or enter the factor and read the sample values directly in concentration units on the digital display. The RS-232C interface allows connection to a printer or computer. Solid state electronics provide faster settings, improved adjustments, greater stability and increased accuracy. Overall dimensions are 16.25W x 13.5D x 8.5H, inches and the weight is 18 pounds. For operation on 100/115 volts, 50/60Hz.


 


Spectrophotometers - Analog and Digital, Thermo Spectronic® 20+ and 20D+
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Product NumberThermo Spectronic No.DescriptionPackagingQtyPrice
21-8950-0133-31-82Thermo Spectronic 20+Each
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Less
$1,875.04
21-8951-0133-31-83Thermo Spectronic 20D+Each
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Less
$1,129.96

 

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