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    Portable Colorimeter, 20mm Caliber

    The high-precision portable colorimeter adopts a 45/0 (45-degree ring illumination, 0-degree reception) geometric optical structure conforming to CIE No.15 standards, utilizing concave grating spectrophotometry to accurately measure sample reflectance and various chromaticity data. The instrument is equipped with a Φ20mm large measurement caliber, suitable for precise color measurement and quality control in industries such as traffic signs, plastic electronics, paints and inks, textile printing and dyeing, printing, and ceramics.
    SKU: SISCO-CM-YS4580
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    🚚 Free shipping
    🔙 30-day returns
    📅 Delivery: 7-12 days

    20mm portable spectrophotometer features a separate UV light source for measuring fluorescent samples. It comes with built-in GB 2893 and GB/T 18833 standard colors and allows manual customization of polygonal rectangle tolerances. With just one click, it enables the measurement of brightness factors and color coordinates for traffic signs, road markings, and reflective films. Additionally, it offers high accuracy and stability when dealing with uneven or granular samples with stripes.

    Portable colorimeter features

    High-end hardware configuration

    • Built-in standard polygonal tolerance settings and specific traffic sign color spaces.
    • 3.5-inch TFT true color screen, capacitive touch screen, concave grating, 256-pixel dual-array CMOS detector.
    • Utilizing a combination LED light source with high lifespan and low power consumption, including UV and non-UV variants.
    Portable colorimeter details
    • USB / Bluetooth 4.0 dual communication modes for broader adaptability.
    • Large storage capacity, capable of storing over 30,000 test data entries.
    Portable colorimeter spectral deletion

    Full-spectrum balanced LED and ultraviolet (UV) light source

    • Utilizing full-spectrum balanced LED light source and ultraviolet (UV) light source for accurate measurement of fluorescent whitening agents.
    Portable colorimeter spectral equalization

    Full-spectrum balanced LED light source and UV light source as illumination

    • The 20mm portable spectrophotometer employs full-spectrum balanced LED light source and UV light source as illumination, ensuring abundant spectral distribution in both visible and ultraviolet ranges.
    • Accurately measuring materials containing fluorescent whitening agents such as traffic signs, plastics, textiles, and paper, among others.
    Portable colorimeter spectral light source principle

    Test results closely matching human visual perception

    • The sisco YS4580 plus portable colorimeterconsists of an integrating sphere and an innovative multi-mirror system, capable of forming near-annular illumination on the sample.
    • Eliminating directional dependence, achieving high precision and repeatability regardless of changes in sample position, tilting of the sample, or rotation of the instrument, significantly reducing the impact of graininess.


    The colorimeter can easily achieve accurate color transmission and can also be used as precision color testing equipment. It is widely used in plastic, electronics, paint, ink, textile and garment, printing and dyeing, printing paper, automotive, medical, cosmetic and food industries, research institutes, schools and laboratories.

    Colorimeter applications



    Model SISCO-CM-YS4580-Plus
    Illumination 45/0 (45-degree ring uniform illumination, 0-degree reception)
    Standard CIE No.15, GB/T 3978, GB2893, GB/T18833, IS07724-1, ASTM E1164, DIN5033 Teil7
    Integrating Sphere Size Ф48mm
    Illumination Light Source LED light, UV light
    Spectral Method Concave grating
    Detector 256-pixel dual-array CMOS image sensor
    Measurement Wavelength Range 400-700nm
    Wavelength Interval 10nm
    Bandwidth 10nm
    Reflectance Measurement Range 0-200%
    Measurement Caliber Ф20mm
    Measurement Modes Single measurement, average measurement (2-99 times)
    Color Space CIE LAB, XYZ, Yxy, LCh, CIE LUV, HunterLAB, βxy
    Color Difference Formula ΔE*ab, ΔE*uv,ΔE*94,ΔE*cmc(2:1),ΔE*cmc(1:1),ΔE*00,ΔE(Hunter)
    Other Colorimetric Indicators WI(ASTM E313,CIE/ISO,AATCC,Hunter),YI(ASTM D1925,ASTM313),MI (Metamerism Index), color fastness to staining, color fastness to change, strength, hiding power, support for chromatic polygon tolerance
    Measurement Time 1.5s
    Observation Light Source D65, A, C, D50, D55, D75, F1, F2 (CWF), F3, F4, F5, F6, F7 (DLF), F8, F9, F10 (TPL5), F11 (TL84), F12 (TL83/U30)
    Observer Angle 2°/10°
    Display Spectral chart/data, sample chromaticity value, color difference value/graph, pass/fail results, color bias
    Repeatability Spectral reflectance: within 0.1% standard deviation, colorimetric value: within ΔE*ab 0.04
    Inter-Instrument Difference MAV, within ΔE*ab 0.2 (average of measurements on BCRA series II 12 color tiles)
    Weight 600g
    Battery Capacity 3.7V lithium battery, 3200mAh, can continuously test 5000 times within 8 hours of full charge
    Illumination Light Source Lifespan 5 years, exceeding 3 million measurements
    Display Screen TFT true color 3.5-inch, capacitive touchscreen
    Interfaces USB, Bluetooth dual-mode
    Data Storage 1000 standard samples, 3000 test samples
    Operating Temperature 0-40°C, 0-85RH (non-condensing), altitude: below 2000m
    Storage Temperature -20~50°C, 0~85%RH (non-condensation)
    Standard Accessories Power adapter, data cable, built-in lithium battery, user manual, quality control software (available for download from the official website), black and white calibration box, protective cover
    Optional Accessories Miniature printer, powder testing box

    Q1: How does a colorimeter work?
    A1: Colorimeters rely on the concept of the Beer-Lambert law, which assumes that the absorbance of a substance is proportional to its concentration. For example, the higher the concentration of a solution, the higher the absorbance reading. Many chemical and biological experiments are based on this concept. To obtain a Beer's law curve, several standards (solutions of known concentration) are prepared and their absorbance values are determined using a colorimeter.

    Q2: What is colorimetry?
    A2: A colorimeter is a device that measures light absorbance (how much light is absorbed) and light transmission (how much light passes through) in a liquid by analyzing the intensity of the color.

    Q3: What are the limitations of a colorimeter?
    A3: One limitation of chemical colorimeters is that differences in certain substances may lead to inaccurate test results. According to Global Water Instrumentation, because these differences are different for each substance, a chemical colorimeter alone is not a completely foolproof testing device.

    Tips: Portable colorimeter in the paper industry

    A portable colorimeter has become an indispensable instrument for optical analysis in scientific research and life activities. For example, in the production of paper, chromaticity is particularly important for the control of paper color. Because of the wide range of materials involved in the materials used to make paper, and the bleaching and pulping processes in paper production require chemical and mechanical processing, the paper industry is particularly stringent in monitoring the product. In addition, the papermaking process is a 24-hour continuous production, and the production site environment is extremely poor, with high humidity and vibration, which is very unfavorable to the use of chromatography. Therefore, the use of LED as a light source is very popular. The light source of this instrument can be stable for a long time.


    Thank you for buying industrial test and measurement equipment on, all products sold by SISCO and the partner cover a 12 months warranty, effective from the date of receiving the products.

    What is covered?

    SISCO is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.

    What is not covered?

    • Product purchased from anyone other than a SISCO store or a SISCO authorized reseller.
    • Expendable parts.
    • Routine cleaning or normal cosmetic and mechanical wear.
    • Damage from misuse, abuse or neglect.
    • Damage from use of parts other than SISCO approved.
    • Damage from use outside the product’s usage or storage parameters.
    • Damage from use of parts not sold by SISCO.
    • Damage from modification or incorporation into other products.
    • Damage from repair or replacement of warranted parts by a service provider other than a SISCO authorized service provider.
    • Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.
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