If you’re looking for a highly accurate measurement instrument that uses the latest technology, then the CM-3700A bench-top spectrophotometer is just what you need, and it exceeds most industry color requirements. With a wide range of applications, the CM-3700A obtains highly-accurate reflectance and transmittance measurements.

Spectrophotometer CM-3700A

The CM-3700A spectrophotometer provides the highest level in accuracy and reliability available in a bench top unit. It features aperture masks, a large sphere, and a complete optical system, going above and beyond international standard requirements. Emitting a high power xenon flash when a measurement takes place, this instrument ensures the most accurate measurement is taken. Users are able to switch the size of the measurement area by choosing from 25.4mm, 8mm, and 3x5mm depending on the needs of their application. With a sample holder that also features a long arm to enable measuring the center of an A4-sized sample, the CM-3700A spectrophotometer also has a damper to provide a “slow-close” effect that prevents the sample holder from slamming shut which could possibly damage the measurement sample.

With the ability to switch between SCI and SCE, the CM-3700A spectrophotometer makes measuring reflective colors easy. It’s also easy to determine florescent colors thanks to the instrument’s UV cut filters which allow 1,000-step adjustment of UV light, providing ideal measurement of pulp, paper, and any other materials containing florescent materials. Also, users can effectively measure transparent colors with diffused lighting. These unique features allow a wide range of applications to be measured including textiles, plastics, kiln-fired materials, dyed items, food, liquids, and others. The CM-3700A spectrophotometer is easily controllable by a PC via a USB cord, which provides an easier connection and faster communication. What’s more, data control and editing is easy with Windows compatibility.

The CM-3700A’s compatibility with SpectraMagic NX software offers another easy-to-use option, and provides multiple views of data results which can then be edited. By associating two or more secondary targets with target data of the primary target, allows for sophisticated QC applications, such as checking for color difference.

With the software’s easy drag-and-drop ability, information can be easily interpreted after printing. Preconfigured templates and a variety of graphs are available to display information, and information is available at a glance in the status window. Older data is compatible simply by transferring data compiled with older software to the newest updated software. Information can also be easily exported into Excel if that’s what you need to show data. Additional information is available with the Color Tutorial and the Navigation Function with the included software.

CM 3700A Spectrophotometer

Spectrophotometer CM-3700A

  • Highly reliable and accurate – one of the most reliable and accurate spectrophotometers available by utilizing state-of-the-art technology
  • Windows compatible – Compatibility allows it to be controlled from a computer with Windows software
  • Measurement area switching – flexibility allow users to select either 25.4mm, 8mm, or 3x5mm measurement areas
  • Can measure reflective, transparent, and fluorescent color – using SCI/SCE switching, diffused lighting, and/or UV cut filters, users can easily measure reflective, transparent, and reflective colors
  • International standards – many standards are included in the CM-3700ACIE, such as ISO, ASTM, DIN, and JIS
  • Xenon flash – allows even very dark shades to be accurately measured with this instrument
  • USB Connectivity – faster communication and an easier connection to PCs with the USB interface
  • Dampening sample holder – not only does the featured long arm enable measuring the center of an A4-sized sample, a damper also provides a “slow-close” effect, preventing the sample holder from slamming shut, which could possibly damage the measurement sample
  • Protective frame power switch – to decrease the likelihood of accidentally powering off during operation, a protective frame has been added around the power switch

Spectrophotometer CM-3700A

observation system
Reflectancedi:8° , de:8° (diffuse illumination, 8° viewing angle)
SCI (specular component included) / SCE (specular component excluded) switchable
Conforms to CIE No.15, lSO 7724/1, ASTM E 1164, DIN 5033 Teil 7 and JIS Z 8722 condition c standard.
Transmittancedi:0° , de:0° (diffuse illumination, 0° viewing angle)
Conforms to CIE No.15, ASTM E 1164, DIN 5033 Teil 7 and JIS Z 8722 condition g standard.
DetectorSilicon photodiode array with flat holographic grating
Wavelength range360nm to 740 nm
Wavelength pitch10 nm
Half bandwidthApproximately 14 nm average
Photometric range0 to 200%; Resolution: 0.001%
Light sourcePulsed xenon arc lamp
Minimum measurement interval3 seconds
measurement area
ReflectanceChangeable between LAV, MAV, and SAV
SAV: 5 × 7 mm illumination/3 × 5 mm measurement
MAV: Ø 11 mm illumination/Ø8 mm measurement
LAV: Ø28 mm illumination/Ø25.4 mm measurement
TransmittanceØ2m illumination/Approx. Ø20 mm
RepeatabilityWhen white calibration plate is measured 30 times at 10-sec. intervals after white calibration has been performed:
Spectral reflectance: Standard deviation within 0.05%
Chromaticity: Standard deviation within ΔE*ab 0.005
When black tile (BCRA Series II; reflectance: 1%) is measured 30 times at 10-sec. intervals after white calibration has been performed:
Spectral reflectance:
380 to 740 nm: Standard deviation within 0.02%
360 and 370 nm: Standard deviation within 0.04%
Chromaticity: Standard deviation within ΔE*ab 0.05
Inter-instrument agreement (LAV)Mean ΔE*ab 0.08 (typical) Average for 12 BCRA Series II color tiles
Max. ΔE*ab 0.3 (corresponds to ΔEcmc 0.2) for any of 12 BCRA Series II color tiles compared to values measured with Konica Minolta master body
UV adjustmentComputer controlled; Continuously variable; 400 nm cutoff filter
Transmittance chamberMaximum sample thickness: Approx. 50 mm
Maximum sample length: Unlimited (transmittance chamber has no sides when transmittance chamber cover is open)
Sample holder (optional) for holding sheet samples or containers of liquid samples can be installed/removed.
InterfaceUSB 1.1
PowerAC 100V to 240V 50/60Hz (using included AC adapter)
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 35°C) with no condensation
Dimensions (W×H×D)271×274 ×500 mm
Standard accessoriesWhite Calibration Plate; Target Mask (3×m); Target Mask (Ø8 mm); Target Mask (Ø25.4 mm); Zero Calibration Box; AC Adapter; USB Cable (3 m); Accessory Case; Dust Cover
Optional accessoriesColor Data Software SpectraMagic NX; Transmittance Specimen Holder; Glass Cells (2 mm, 10 mm, 20 mm); Plastic Cells (2 mm, 10 mm, 20 mm); Transmittance Zero Calibration Plate; Color Tiles; USB Cable (5m)

Spectrophotometer CM-3700A

Catalog Download: Download PDF (2.5MB)

Owner’s Manual: Download PDF (467KB)

Spectrophotometer CM-3700A

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