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CSM 20 is a handheld spectrophotometer colorimeter used for high-quality color measurement. Featuring a single 8 mm aperture and including SCI and SCE specular modes for industrial color measuring applications, the CSM 20 offers a long battery life, a 4-color lamp life and an easy-to-use portable design. The powerful battery allows up to 5000 measurements. The lighting used on the spectrometer is designed to carry out three million measurements. Camera/illumination locating for small samples.


The high-quality processing of the spectrometer is very fast. The ability to choose aperture size and light source allows the user to discriminate between colors that may look the same. Six color space choices allow the user to choose the best space for their samples. The 256 image element double array CMOS imager allows measurement from 400 to 700 nm in 10 nm increments.


The measured data can be transmitted to a computer via USB. Sophisticated analysis software is also included in the delivery contents that includes the USB cable.



  1. Long battery life
  2. USB cable for data transfer to included software
  3. Portable for ease of use
  4. Reference memory of 2000 colors, storage for 20,000 samples
  5. Includes white and black calibration standards
  6. High measuring accuracy and stability with 4 illumination choices
  7. Single and average measurements with delta pass/fail display
  8. Spectrophotometer measures from 400 to 700 nm in 10 nm increments
  9. Conforms with CIE No. 15, GB/T  3978, GB2893, GB/T 18833, ISO7724/1, ASTM E1164, DIN5033 Teil

Colorimeter CSM 20

  • Measuring geometry

    8° / d

    Integrated sphere size 48 mm
    Light source LED lighting system, UV light
    Spectrophotometric operation Concave grid
    Sensor 256 Pixel CMOS image sensor
    Wavelength range 400 ... 700 nm
    Wavelength interval 10 nm
    Measured reflection range 0 ... 200% 
    Measuring aperture Single panel: 8 mm (0.3") / 10 mm (0.4")
    Specular component SCI, SCE
    Colour ranges CIE Lab, XYZ, Yxy, LCh, CIE LUV, Hunter LAB
    Formulas for color inequality ΔE*ab, ΔE*uv, ΔE*94, ΔE*cmc(2:1), ΔE*cmc(1:1), ΔE*00, ΔE(Hunter)
    Lighting type D65, A, C, D50
    Viewing angle 2° / 10°
    Data display Spectrogram values, colour values samples, colour difference values / graph, pass / fail result, colour balance
    Measuring time 2.6 seconds
    Repeatability MAV/SCI: ΔE*≤0.06
    Device error MAV/SCI: ΔE*≤0.4
    Measurement mode Single measurement, average value measurement
    Tracking procedure Finding the measuring points by camera
    Power supply built-in Li-ion battery
    Dimensions 184 x 77 x 105 mm / 7.2 x 3.0 x 4.1" (L x W x H)
    Weight 600 g / 1.3 lbs
    Lamp lifespan 5 years / over 3 million measurements
    Display 3.5 in TFT colour LCD, capacitive touch screen
    Data interface USB
    Data storage 2000 standards, 20,000 samples
    Menu languages English, Chinese
    Operating conditions 0 ... 40°C / 32 ... 104°F
    0 ... 85% relative humidity (non-condensing)
    Storage conditions -20 ... 50°C / -4 ... 122°F
    0 ... 85% relative humidity (non-condensing)
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