CM-5 Spectrophotometer
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All-in-one color measurement for solids, liquids, pastes, powders and more
The CM-5 is a high-precision benchtop spectrophotometer engineered for quality assurance professionals who need reliable, repeatable color measurement across diverse sample types and demanding production environments. Its top-port design, large color LCD, and onboard software eliminate the need for a separate computer — delivering laboratory-grade accuracy from a single, compact instrument.
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Features
Measures virtually any sample form
Evaluate solids, liquids, pastes, powders, pills, and granules — opaque, transparent, or translucent — using one instrument.
Automatic calibration on every start-up
The internal white calibration plate calibrates the instrument automatically at power-on, maintaining consistent accuracy with no manual intervention.
Instant pass/fail judgement
Set color tolerances and receive immediate pass/fail results on the color LCD — ideal for production-line QA workflows.
No computer required
Onboard firmware with an Operation Wizard guides users through set-up and measurement. Color values, spectral graphs, and difference graphs display directly on the 5.7-inch TFT screen.
Industry-standard indices built in
Gardner, Hazen/APHA, Iodine Color Number, US Pharmacopeia, and European Pharmacopoeia indices are pre-loaded for fast, compliant measurement.
Multi-user ready
Store individual instrument settings and target color data on a USB memory stick, enabling multiple operators to work consistently from a shared instrument.
Specifications
| Model | CM-5 |
|---|---|
| Illumination/viewing system | Reflectance:
di:8 °, de:8 ° (diffuse illumination: 8 ° viewing) Transmittance: 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 | 360 nm to 740 nm |
| Wavelength pitch | 10 nm |
| Half bandwitdh | Approx. 10 nm |
| 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 Transmittance: 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 x 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) |
| Index | Reflectance:
MI; WI (ASTM E 313-73, ASTM E 313-96); YI (ASTM E 313-73, ASTM E 313-96, ASTM D 1925); Transmittance: 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) x; 192 (H) x; 261 (D) mm Slide cover open: 475 (W) x; 192 (H) x; 261 (D) mm |
| Weight | Approx. 5.8 kg |
| Operating temperature/humidity range | 13 to 33 °C, relative humidity 80 % or less (at 33 °C) with no condensation |
| Storage temperature/ humidity range | 0 to 40 °C, relative humidity 80 % or less (at 33 °C) with no condensation |
Industries Served
- Automotive
- Building Materials
- Food & Beverages
- Paint & Coatings
- Pharmaceutical & Cosmetics
- Plastics
- Textile & Apparel
- Chemicals & Laboratory
Frequently Asked Questions
What types of samples can the CM-5 measure?
The CM-5 measures virtually any sample form — solids, liquids, pastes, powders, pills, and granules — in opaque, transparent, and translucent configurations. Liquid and powder samples can be measured using optional Petri dish accessories, while liquid transmittance measurements use 2 mm, 10 mm, or 20 mm cuvettes.
Does the CM-5 need to be connected to a computer?
No. The CM-5 operates as a fully standalone instrument. Its onboard software, Operation Wizard, and 5.7-inch color LCD enable complete measurement workflows without a PC. It can optionally connect to SpectraMagic NX2 for advanced data analysis and color formulation.
Is the CM-5 suitable for pharmaceutical color measurement?
Yes. The CM-5 includes built-in indices for both US Pharmacopeia and European Pharmacopoeia standards, as well as Gardner, Hazen/APHA, and Iodine Color Number — making it well suited to pharmaceutical QA and cosmetics manufacturing.
What is the difference between SCI and SCE measurement modes?
SCI (specular component included) measures the inherent color of a material independent of surface texture, while SCE (specular component excluded) measures the visual appearance as the human eye perceives it. The CM-5 switches between both modes, providing a complete picture of color and appearance.
Can multiple operators use the same CM-5?
Yes. Individual measurement settings, target color data, and calibration configurations can be saved to a USB memory stick, allowing different operators to load their own profiles quickly and work consistently on a shared instrument.
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