CM-3500d Spectrophotometer (Discontinued)

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View our latest version of this instrument, the CM-5.

The CM-3500d bench-top spectrophotometer is a multi-function unit with the ability to measure color in various applications, including reflectance and transmittance. Three measuring aperture sizes, 3mm, 8mm, and 30mm; can be interchanged depending upon the application. The transmission chamber is convenient for measuring transparent liquids or solids and the top-port is ideal for measuring the reflectance of solids, granular, powders, pastes, and opaque liquids. Users have the option to switch between SCI and SCE.

This instrument is compatible with SpectraMagic NX software which is easy-to-use and displays multiple views of data results which can be edited. Target data of the primary target can be associated to two or more secondary targets, allowing for sophisticated QC applications, such as checking for color difference.

A variety of graphs can be used to display information, preconfigured templates are available, and a status window is available to show instrument information at a glance. Data compiled with older software is compatible and can be transferred to the newest updated software. If Excel is needed to show data, the information can also be easily exported. A Navigation Function and Color Tutorial are included with the software for additional information.


  • Highly Accurate – d/8 degrees geometry makes this instrument extremely accurate and repeatable
  • Controlled via a PC – SpectraMagicNX data software is used to control the device
  • Three diameter measurements – 3, 8, and 30mm aperture masks to fit any measurement need
  • Ability to measure transparency – using diffuse illumination/0 degrees viewing angle (d/0) geometry
  • Any application – pastes, solids, powders, liquids, and granular applications are possible
  • Top-port and transmission chamber – two ways of measuring items


Illuminating/viewing system Reflectance: d/8 (diffuse illumination/8Delta viewing angle); SCI (specular component included)/SCE (specular component excluded) switchable; meets IS0 and DIN standards for d/8 geometry; also meets CIE and ASTM standards for d/0 geometry. Transmittance: d/0 (diffuse illumination/0Delta viewing angle)
Detector Dual 18-element silicon photodiode array with wedge-shaped continuous interference filter
Wavelength range 400 to 700nm
Wavelength pitch 20nm
Half bandwidth Approx. 20nm average
Photometric range 0 to 175%; Resolution: 0.01%
Light source Pulsed xenon arc lamp
Measurement time Approximately 2.5 sec. (to start of data output)
Minimum interval between measurements 3 sec.
Measurement/illumination diameters Reflectance: Changeable between LAV and MAV
LAV: Φ 30mm measurement/Φ 36mm illumination
MAV: Φ 8mm measurement/Φ 11mm illumination
Transmittance: Approx. Φ 22mm
Repeatability When white calibration plate is measured 30 times at 10-sec. intervals after white calibration has been performed: Spectral reflectance: Standard deviation within 0.20%
Chromaticity: Standard deviation within Delta E*ab 0.05
Inter-instrument agreement Mean Delta E*ab 0.15 (typical) Average for 12 BCRA Series II color tiles compared to values measured with standard body
Temperature drift Spectral reflectance: Within +-0.30%/Delta C
Color difference: Within Delta E*ab 0.05/Delta C
Interface RS-232C standard
Power AC 100V/120V/230V 50/60Hz (using included AC adapter)
Operating temperature/humidity range 0 to 40 deg C, relative humidity 85% or less (at 35 deg C) with no condensation
Storage temperature/humidity range -20 to 45 deg C, relative humidity 85% or less (at 35 deg C) with no condensation
Dimensions (W x H x D) 413 x 190 x 240mm (16-15/16 x 7-1/2 x 9-7/16 in.)
Weight 10kg (22 lb.)
Standard accessories White Calibration Plate CM-A120; Target Mask (Φ 8mm) CM-A122; Target Mask (Φ 30mm) CM-A123; Zero Calibration Box CM-A124; Carrying Case CM-A67; AC Adapter ; RS-232C Cable (2m/6.6 ft., 9-pin, for IBM PC) IF-A12
Optional accessories Color Data Software SpectraMagic !” NX; CM-A96 Transmittance Specimen Holder; Cells CM-A97 (2mm), CM-A98 (10mm), CM-A99 (20mm); Plastic Cells CM-A130(2mm), CM-A131(10mm), CM-A132 (20mm); Transmittance Zero Calibration Plate CM-A100; Sample Viewing Mirror CM-A125; Color Tiles; RS-232C Cable (for IBM PC)

Included Accessories

CM-A120 White Calib Plate (w/cap & disk)
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CM-A122 Target Mask (8mm)
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CM-A123 Target Mask (30mm)
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CM-A124 Zero Calibration Box
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CM-A75 Accessory Case
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IF-A12 RS-232C Cable (IBM PC/AT) 2M
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Suggested Accessories

CM-A100 Transmittance Zero Cal. Plate
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CM-A121 Target Mask (3mm)
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CM-A125 Specimen Viewing Mirror
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CM-A126 Petri Dish Set
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CM-A127 Target Mask (for Petri Dish)
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CM-A128 Petri Dish
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CM-A129 Calibration Glass (for Petri Dish)
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CM-A130 Plastic Cell (2mm) 100 per box
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CM-A131 Plastic Cell (10mm) 100 per box
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CM-A132 Plastic Cell (20mm) 100 per box
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CM-A96 Transmittance Specimen Holder
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CM-A97 Cell (2mm)
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CM-A98 Cell (10mm)
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Cell CM-A99 (20mm)
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IF-A13 RS-232C Cable (IBM PC/AT) 5M
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IF-A14 RS-232C Cable (IBM PS2) 2M
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IF-A14 RS-232C Cable (IBM PS2) 5M
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