Project Description

The colorimeter CM-34 is a high-accuracy color measuring instrument for color evaluation of  the objects, with a 4mm aperture particularly for very small size, including object with arc or other special surface.

The CM-34, CM-38 and CM-316 family colorimeter is a lightweight, compact, portable instrument for color evaluation and is also very easy to use and understand the menus.

Able to store up to 2000 measurments, The CM-30 series has its different apertures from 4mm to 16mm  it has the ability to measure different types of products and multiple kinds of surfaces in various applications. The CM-34 with 4mm aperture is ideals for a small color measuring area, arc and other special surface object. Such as 20mm diameter rod plastic product color measurement; Cambered glass bottle; the convex and concave ceramic devices in the security facility and etc.

The lightweight, compact data processor can be operated by battery or can be connected by AC adapter, and with its ability to print results on-site, labeling is easy. Featuring a user index function, the CM-34 allows customers to configure evaluation and color calculation formulas as desired. This feature is extremely useful when customized or industry-specific formulas are used instead of the versatile color system and standard evaluation formula (L*a*b*).

The CM-34 colorimeter’s LCD screen is capable of displaying pseudocolor  and pass/fail information and color-difference graphs, and can be set in two languages English and Chinese. Type user comments into the results or, by using the data processor, customers can determine channel names. A variety of accessories are available to accommodate various target types such as powders, liquids, and pastes.

The CM-34 colorimeter is compatible with color management software and is easy-to-use. Multiple views of data results can be viewed and edited. By associating target data of the primary target with two or more secondary targets, color management software applications are allowed, such as checking for color difference.

The CM-34 colorimeter technical features the most stable measurement performance with repeatability of △E*ab<0.03 (this data is less means the insturment more stable). With 8 light sources to handle metamerism and 8 color difference formulas to meet different fields. 5 color space to meet different description of color data in different industies (CIELAB, CIELCH, CIEXYZ, CIELUV, HunterLAB, sRGB).

Provide the same benefits and functions the CM-38 with a stand 8mm aperture ideals for almost any industries and CM-316 with a 16mm aperture for textured, pitting, particulate and uneven surfaces or a lot of variation in color.


Easy-to-use – easy-to-understand menus and buttons

Portable hand-held design, lightweight, can be run by battery or AC adapter

LCD screen – capable of displaying pass/fail assessment information, color-difference graphs, and Pseudocolor Color LCD screen displays data clearly easy to see.


Most stable measurement performance – repeatability △E*ab< 0.03(this data is less means the instrument more stable that’s let you get the right color more easyly.)

Tight inter-instrument agreement measures consistently with other instruments of the same model, allowing color values and specifications to be communicated, shared, and coordinated seamlessly internally and throughout the supply chain

Auto Calibration with white boad  at startup.

High – capacity rechargeable Li-ion battery Can be used for more than 5000 times for on one charge to ensure the stability of long time use.



 Data processor (optional) – measuring head can measure alone or with the data processor, allowing advanced features to be used and labeling on-site is easy with the built-in high-speed printer


Software compatible integrates with SpectraMagic NX software to record measurements and provide a more comprehensive color analysis for color quality control

Stores Measurements – can store up to 1,000 measurements on its own, or 2,000 when the data processor is attached

Abundant accessories – many available accessories


3 years warranty.




Product Name Colorimeter
Model CM-34 CM-38 CM-316
4mm aperture for measuring color in a small area or on a spherical surface  8mm stand aperture for almost any samples. 16mm aperture for textured, pitting,particulate and uneven surfaces or a lot of variation in color.
Color Difference Formula △E*ab, △ECMC, △EISO, △ECIE94, △EFCMⅡ, △ELuv, △Ehunter, △EsRGB
Illuminating / viewing geometry 8/d (8°; illumination angle / diffuse viewing)
Light Source LED blue excitation
Sensor Photodiode array
Measurement Caliber Φ4mm φ8mm φ16mm
Measurement Conditions Observer: CIE 10°, Standard observer        Illuminant: A, C, D50, D65, F2(CWF), F7, F11(TL84), F12(U30) Contain light way: SCI SCE
Measuring range L*: 0 to 100
Repeatability △E<0.03 (take the deviation average after measuring the whiteboard 30 times)
Inter-instrument agreement △E*ab: within 0.2
Minimum interval between measurements 0.5 Sec
Storable data sets Max. 20000 pieces of data 100 target and 200 samples for each target data
Display screen TFT true color 2.8inch@ (16:9) resolution ratio: 400×240
Languages Chinese and English
Battery performance Li-ion battery with approximately 5000 measurement for each charge
Lifetime of bulb 5 years of more than 1.6 million measurements
Interface of external RS-232 (115200bps) – connected with micro printer
Operating temperature / humidity range 0° to 40° C with relative humidity of 85% or less (at 35° C) with no condensation
Storage temperature / humidity range -20° to 40° C with relative humidity of 85% or less (at 35° C) with no condensation
Weight 700g
Size 199*68*90 mm
Package size 400*240*340 mm
Standard accessories USB cable, Color Analysis Software, 3000mAH Li-ion battery, AC adapter, User manual, Warranty card
Optional accessories Micro printer, powder test chassis, multifunctional test accessories
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