Entry-level portable spectrophotometer with modern user interface and colour display. Can be operated via the built-in display or connected to a colour data software.

  • Affordable Portable Spectrophotometer
  • Wavelength range 400-700 nm
  • d:8° Sphere Geometry
  • Simultaneous SCI / SCE measurement
  • Rechargeable lithium-ion battery

Easy to use for anyone

The CM-23d is a portable sphere type spectrophotometers with horizontal alignment, which is most convenient to measure the colour of flat or large samples. The CM-23d delivers measurement data including (SCI) and excluding (SCE) surface conditions in one measurement sequence.

Designed to be easily operated by both left- or right-hand users, the instrument is built around a modern user interface. A built-in sample observation port enables the operator to accurately position the measurement aperture on the sample every time. A large built-in display shows measurement data either numerically or graphically.


An entry level instrument that shares the user interface with our top of the range portable instruments. The CM-23d provides colour measurement and colour difference measurement for a number of simple, flat samples.
  • Single aperture instrument: 8mm medium measurement aperture with integrated sample viewer.
  • Simple Mode: quickly and easily measure target versus sample for colour difference.
  • Improved measurement time: approx. 60% faster than its predecessor model for measurement, charge and data processing.
  • Includes all major illuminants and colour indices: simultaneous evaluation using two illuminants.
  • Lithium-ion battery: removable battery and option for additional batteries and external charger (battery charges whilst connected to USB bus power).

Specifications & Downloads

Specifications & Downloads



Illumination / Viewing system

d:8° (diffuse illumination, 8-degree viewing ), equipped with simultaneous measurement of SCI (di:8° specular component included) / SCE (de:8° specular component excluded) Conforms to (complies to DIN5033-7, JIS Z 8722c, ISO7724/1, CIE No.15)

Sphere Size

Ø 54 mm

Light-receiving element

Silicon photodiode array (dual 32 elements)

Spectral separation device

Planar Diffraction Grating

Wavelength range

400 nm to 700 nm

Wavelength pitch

10 nm

Half bandwidth

Approx. 10 nm

Reflectance range

0 to 175%, resolution: 0.01%

Light source

Pulsed Xenon lamp (with UV cut)

Measurement time

~ 0.7 seconds (SCI or SCE)

Minimum measurement interval

~ 1.5 seconds (SCI or SCE)

Measurement/illumination area

MAV : Ø 8 mm / Ø 12 mm


Standard deviation within ΔE*ab 0.08

(Measurement conditions: white calibration plate measured 30 times at 5-second intervals after white calibration)

Inter instrument agreement

WithinΔE*ab 0.4

(MAV/SCI) Average for 12BCRA Series II color tiles compared to values measured with master body at 23°C.


USB 2.0 (Bluetooth™ optional)

Observer condition

CIE: 2° and 10° colorimetric standard observer

Illuminant condition

CIE: A, C, D50, D65, F2, F6, F7, F8, F10, F11, F12, ID50, ID65 (simultaneous evaluation is possible using two light sources)

Display data

Colorimetric values/graph, color difference values/graph, spectral graph, pass/fail judgment, pseudocolor

Color space / colorimetric data

L*a*b*, L*C*h, CMC(1:1), CMC(2:1), CIE94, CIE00, Yxy, XYZ (and color difference in these spaces); Munsell (C), MI, WI (ASTM E313-73), YI (ASTM D1925), Opacity,

Data memory

1000 targets + 1700 samples

Power source

Dedicated lithium-ion battery (removable), USB bus power (with lithium-ion battery installed), Dedicated AC adapter (with lithium-ion battery installed)

Dimensions (W × H × D) [mm]

81 × 93 × 229

Weight [g]


Operating temperature / humidity range (*1)

5 – 40°C, relative humidity 80% or less (at 35°C) with no condensation

Storage temperature/humidity range

0 – 45°C, relative humidity 80% or (at 35°C) with no condensation

Standard accessories

White and Zero calibration box, Target mask Ø 8 mm, USB cable, USB-AC-Adapter, Li-Ion Battery pack, Wrist-strap

Optional accessories

Hard case, Bluetooth™ module, SpectraMagic™NX (software), positioning tool

Display languages

English, German, French, Italian, Spanish, Portuguese, Russian, Turkish, Polish, Chinese (Simplified), Japanese

Specifications and appearance subject to change without notice. Company names and product names herein are trademarks or registered trademarks of their respective companies.

CM-23d Catalogue

Entry level portable spectrophotometer for reflectance colour measurement of solid samples


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