Thermo Scientific™ GENESYS™ 20 Visible Spectrophotometer Available on GSA/VA Contract for Federal Government customers only.

This product has been discontinued. Please check out the newest visible spectrophotometer, the Thermo Scientific™ GENESYS™ 30.

Manufacturer: Thermo Scientific™ 4001-000

 View all options for this product

Catalog No. 14-385-445


This item has been discontinued by the manufacturer and is no longer available. Please call customer service for assistance: 1-800-766-7000.  View substitute products »


    Depth (English) 13 in.
    Depth (Metric) 33 cm
    Description GENESYS 20 without printer
    In Germany, France, or Spain, use Catalog #4001-03
    Detector Type Silicon photodiode
    Display 20 character, 2 line LCD
    Drift 0.003 A/hr
    Electrical Requirements Selected automatically, 120 V
    Height (English) 7 in.
    Height (Metric) 19 cm
    Hertz 50/60 Hz
    Includes 10mm cell holder; dust cover; U.S. power cord
    Interface RS-232-C (serial)
    Lamp Tungsten-Halogen (typical service life 1000 hours)
    Noise ≤0.001A at 0A ≤0.004A at 2A, 500 nm
    Optical Design Single beam
    Photometric Accuracy Instrument ±0.003A from 0.0 to 0.3A1.0% from 0.301A to 2.5A, NIST 930D filters 
    Photometric Range -0.1-2.5A; 0-125%T, 0-1999C
    Photometric Readout Absorbance, %Transmittance, Concentration
    Spectral Bandwidth ≤8 nm
    Stray Light <0.1%T at 340 nm and 400 nm
    Type GENESYS 20 without printer
    Wavelength Accuracy ±2.0 nm
    Wavelength Range 325 - 1,100 nm
    Weight (English) 10 lb.
    Weight (Metric) 4.5 kg
    Width (English) 12 in.
    Width (Metric) 30 cm
    Warranty 1 year

    This product has been discontinued. Please check out the newest visible spectrophotometer, the Thermo Scientific™ GENESYS™ 30.

    Multiple purpose capabilities allow you to measure a wide range of analytes.

    Precise and Reliable

    • Compact footprint provides a space-saving, convenient system‚ Intuitive keyboard with integrated controls and LCD display
    • Routine measurements require just a few keystrokes
    • Direct measurement of routine absorbance or transmittance data
    • Concentration mode for single point standard or factor-based quantitative analysis
    • Optional holders for test tubes and long path cells to 50mm
    • User-selectable choice of five languages (English, French, German, Spanish, Italian)
    • Bidirectional RS-232-C interface

    Low Cost of Ownership

    • Cleanable, chemical-resistant surfaces and rugged design withstands harsh laboratory environments
    • Few moving parts; virtually maintenance-free operation
    • Choose instrument with or without integral printer


    10mm cell holder, dust cover, and U.S. power cord.


    Fisher Service Division offers several types of service agreements for the equipment featured here. For details on these agreements, equipment repairs, and calibration services, see the front of the catalog. For immediate assistance, call 1-800-395-5442.

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