The CM-5 bench-top spectrophotometer is an easy-to-use, color measurement instrument that features a keyboard and color LCD screen, eliminating the need for a computer. This product has the ability to automatically calibrate every start-up, measure a variety of sample sizes and forms, and includes internal calibration for standard chemical and pharmaceutical indices.

Spectrophotometer CM-5

The CM-5 Spectrophotometer, a stand-alone, top-port color measuring instrument, is bench-top spectrophotometer with a large LCD screen and onboard software which eliminates the need for a separate computer. Color plots, as well as graphical and numerical data are displayed on the screen. The Operation Wizard, included with the unit, guides the user through the measurement process. Select Automatic Calibration to perform calibration every time the unit is turned on. Not only can the unit measure both transmittance and reflectance, but the user can can designate PASS/FAIL tolerances for each measurement as well.

It’s no problem to measure samples in many forms such as pellets, solids, gelatins, powders, and pastes with the CM-5 and it’s accessories, and that includes opaque, transparent, and translucent liquids. The CM-5 Spectrophotometer has the ability to take measurements for the chemical and pharmaceutical industries according to several standard indices: Gardner, Hazen/APHA, Iodine Color Number, US Pharmacopeia, and European Pharmacopoeia. The CM-5 can store and later recall settings for multiple-user situations,using USB memory sticks, or store data on USB memory sticks for computer analysis later. If a user need a more advanced analysis of data, the CM-5 Spectrophotometer can be connected to a PC with color software.

CM-5 Spectrophotometer from Konica Minolta Sensing Americas


Spectrophotometer CM-5

  • Easy 1-2-3 measurement – 1. Switch power on, 2. Position sample, 3. Press MEAS
  • Large color LCD – easy to read, displays data graphically and numerically, and shows PASS/FAIL judgments and color plots
  • Wizard for on-screen operation guidance – users making instrument settings are provided guidance by the Operation Wizard
  • Multi-user friendly – utilizing a USB memory stick, users can store each user’s settings and later read these settings back into the instrument for the next use. The USB can also be used to save target and measurement data
  • Automatic calibration – Set the unit to Automatic Calibration and every time the unit is turned on calibration can be performed automatically
  • 8 languages– can be shown in English, German, Japanese, Italian, French, Portuguese, Spanish, and simplified Chinese
  • Top-port design – positioning the sample is easy with the top-port design
  • Three measuring areas – adapt to different sample sizes with available target masks, including 30mm, 8mm, 3mm
  • Measures variety of samples – optional Petri dish accessory enables measurement of pellets, granules, powders, chunky samples, pastes, and opaque liquids. Simply place solids on top. For small samples the 3mm target mask is suitable, and for tiny unique samples, custom mini Petri dishes are available
  • Large transmittance chamber – a large transmittance chamber with no sides is revealed by sliding open the unit, so even large sample sheets up to 60mm thick can be inserted and measured
  • Liquid measurements using cells – can measure liquids with optional cells, lengths 2mm, 10mm, and 20mm in order to measure different densities
  • Internal calibration for standard chemical/pharmaceutical indices – Gardner, Hazen/APHA, Iodine Color Number, US Pharmacopeia and European Pharmacopoeia can all be internally calibrated
  • Spectral absorbance measurement – a variety of industries can utilize new Graphical and numerical Absorbance displays

Spectrophotometer CM-5

Model CM-5
Illumination / observation system Reflectance:

di:8°, de:8° (diffuse illumination: 8° viewing)
SCI (specular component included)/SCE (specular component excluded) switchable
Conforms to CIE No. 15, ISO 7724/1, ASTM E 1164, DIN 5033 Teil 7, and JIS Z 8722 (Condition c)


di:0°, de:0° (diffuse illumination: 0° viewing)

Integrating Sphere Size Φ152 mm
Detector Dual 40-element silicon photodiode arrays
Spectral separation device Planar diffraction grating
Wavelength range 360nm to 740nm
Wavelength pitch 10 nm
Half bandwidth Approx. 10nm
Measurement range 0 to 175 % (Reflectance or transmittance); Output/display resolution: 0.01%
Light source Pulsed xenon lamp
Measurement time Approx. 1 s (to data display/output); Minimum measurement interval: Approx. 3 s
Measurement/illumination area Reflectance:

Changeable by changing mask and settings. LAV: Φ30 mm/Φ36 mm; MAV (optional): Φ8 mm/Φ11 mm; SAV (optional): Φ3 mm/Φ6 mm


Φ26 mm

Repeatability Spectral reflectance: Standard deviation within 0.1% (400 nm to 740 nm)
Chromaticity value: Standard deviation within ΔE*ab 0.04 * When a white calibration plate is measured 30 times at 10-second intervals after white calibration
Inter-Instrument Agreement Within ΔE*ab 0.15 (Typical) (LAV/SCI)
(Based on 12 BCRA Series II color tiles compared to values measured with a master body under Konica Minolta standard conditions)
Transmittance chamber No sides (unlimited sample length); Depth (maximum sample thickness): 60 mm
Sample holders (optional) for holding sheet samples or containers of liquid samples can be installed/removed
Display 5.7-inch TFT color LCD
Display languages English, Japanese, German, French, Italian, Spanish, Simplified Chinese, Portuguese
Operating temperature/humidity range 13 to 33°C, relative humidity 80% or less with no condensation
White/100% calibration Automatic white (reflectance)/100% (transmittance) calibration using internal white calibration plate
(Not applicable to 100% calibration when using cells for transmittance measurements of liquids.)
Interfaces USB 1.1 (Connection to PC; USB memory stick); RS-232C standard (Connection to serial printer)
Observer 2° Standard Observer or 10° Standard Observer
Illuminant A, C, D50, D65, F2, F6, F7, F8, F10, F11, F12, ID50, ID65 (simultaneous evaluation with two light sources possible)
Displayed data Spectral values/graph (reflectance, transmittance, absorbance), colorimetric values/graph, color-difference values/graph, pass/fail judgment, pseudo color, color assessment
Color space L*a*b*, L*C*h, Hunter Lab, Yxy, XYZ, Munsell, and color differences in these spaces (except for Munsell)


MI; WI (ASTM E 313-73, ASTM E 313-96); YI (ASTM E 313-73, ASTM E 313-96, ASTM D 1925);
ISO Brightness; B (ASTM E 313-73)


Gardner; Iodine Color Number; Hazen/APHA; European Pharmacopoeia; US Pharmacopeia

User index User-defined index
Color-difference equation ΔE*ab (CIE 1976), ΔE*94 (CIE 1994), ΔE00 (CIE 2000), ΔE (Hunter), CMC (l: c)
Pass/fail judgment Tolerances can be set to colorimetric values (except Munsell), color-difference values, or reflectance index values
Storable data Measurement data: 4,000 measurements; Target color data: 1,000 measurements
USB memory stick* storage Storage of measurement data and target color data. Storage/reading of measurement condition settings
* Security-enabled USB memory sticks cannot be used.
Power AC 100 to 240 V, 50/60 Hz (using exclusive AC adapter)
Size Slide cover closed: 385 (W) × 192 (H) × 261 (D) mm
Slide cover open: 475 (W) × 192 (H) × 261 (D) mm
Weight Approx. 5.8 kg
Operating temperature/humidity range 13 to 33°C, relative humidity 80 % or less (at 35°C) with no condensation
Storage temperature/ humidity range 0 to 40°C, relative humidity 80 % or less (at 35°C) with no condensation


Spectrophotometer CM-5

Catalog Download: Download PDF (2.4MB)

Owner’s Manual: Download PDF (46.2MB)

Case Study: Clemson University: Understanding and Controlling Color Download PDF (2MB)

Spectrophotometer CM-5

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