CATEGORIES

    SpectrocoloriMeter

    Overview Knowledge Standards Terms
    A spectrophotometer calculates color values and color differences by measuring the spectral data of light reflected or transmitted by an object. It is used for color quality control of products in industries such as coatings and plastics to ensure color consistency between batches.
    Selection
    When selecting a spectrophotometer, it is essential to consider matching the measurement aperture to the sample size, opt for an integrating sphere structure to handle irregular surfaces, ensure consistency between instruments to guarantee uniform data across multiple devices, and evaluate portability to adapt to various measurement scenarios.
    Type
    Measurement method
    Caliber
    light source
    integrating sphere
    Chromatic value repeability
    Measurement shape
    software
    Special features

    Terms

    Spectrophotometer
    Integrating Sphere Spectrophotometer

    Standards

    Active GB/T 39544-2020
    Natural rubber latex concentrate—Determination of total phosphate content—Spectrophotometric method
    Active GB/T 16258-2018
    Test method for sugar in cotton fibers—Spectrophotometry
    Active GB/T 34323-2017
    Carbon black—Determination of light transmittance of water dispersion—Spectrophotometer method
    Active GB/T 25481-2010
    On-line ultraviolet/visible spectrum analyzer
    Active GB/T 26810-2011
    Visible spectrophotometer
    Active GB/T 21878-2025
    Water-soluble dyes—Determination of shade and spectrostrength
    Active GB/T 27594-2011
    Disperse dyestuffs - Determination of relative strength of presscakes - Spectrophotometer method
    Active GB/T 20675-2006
    General test method in salt industry - Determination of copper ion(AAS)
    Active GB/T 25968-2010
    Test methods of solar transmittance and solar absorptance of materials by spectrophotometry
    Active GB/T 26813-2011
    Double beam UV/VIS spectrophotometer
    Active GB/T 26798-2011
    Single beam UV/VIS spectrophotometer
    Incoming GB/T 27594-2025
    Disperse dyestuffs—Determination of relative strength—Spectrophotometer method
    Active GB/T 23993-2009
    Determination of formaldehyde content of waterborne coatings - Spectrophtometric method with acetylacetone
    Active GB/T 21878-2008
    Water-soluble sulphur dyes - Determination of spectrostrength
    Active GB/T 9758.1-1988
    Paints and varnishes--Determination of “Soluble” metal content--Part 1:Determination of lead content--Flame atomic absorption spectrometric method and dithizone spectrophotometric method

    Articles

    Use of Fluorescence Spectrophotometer in Measuring Excitation and Emission Spectra of Anti-Counterfeiting Fluorescent Inks
    This article introduces the application of fluorescence spectrophotometry in the spectral measurement of anti-counterfeiting fluorescent inks, including instrument calibration, sample preparation, and methods for measuring excitation and emission spectra.
    Spectrophotometer measures ink spectral reflectance and opacity.
    This article introduces how to measure the hiding power of ink using a spectrophotometer. The instrument irradiates the ink sample, measures its reflectance within the visible light spectrum, and calculates the hiding power using the Kubelka-Munk model.
    The combination of hiding power chart paper and a spectrophotometer enables the digital evaluation of hiding power.
    This article introduces how to combine hiding power cards with spectrophotometers to achieve digital assessment of hiding power.
    UV spectrophotometer for measuring residual monomers in polymer solutions.
    This article introduces a method for determining residual monomers in polymer solutions using ultraviolet spectrophotometry. The principle relies on the characteristic absorption of monomers in the ultraviolet region, calculating their content based on the relationship between absorbance and concentration.
    UV-Vis-NIR spectrophotometer measures the transmittance of anti-reflection coatings.
    This article introduces the method of measuring the transmittance of anti-reflective coatings using a UV-Vis-NIR spectrophotometer. The instrument is based on the Beer-Lambert law, calculating transmittance by comparing the light intensity of the sample and the reference, covering a wide spectral range from ultraviolet to near-infrared.
    Colorimeter controls batch color difference in plastic and rubber films.
    This article primarily discusses how to use a colorimeter to control color differences in the production of plastic and rubber films. It explains the working principle of the colorimeter, which involves converting colors into numerical values represented by L, a, and b values, and then calculating the color difference.
    Determination of Transmittance of Resin Solutions Using UV-Visible Spectrophotometer
    This article introduces the method of measuring the transmittance of resin solutions using a UV-Vis spectrophotometer.
    Colorimeter evaluates the change in yellowing index of transparent resin.
    This article introduces how to use a colorimeter to measure the yellowing index changes in transparent resin. Transparent resin can turn yellow over time or due to environmental influences, and the yellowing index can quantify the degree of color change.
    Application of Colorimeters in Color Management for Packaging and Printing
    This article mainly discusses the application of colorimeters in color management for packaging and printing. A colorimeter is an instrument used to measure color, capable of converting colors into numerical values, such as representing them with L*a*b* values.
    Multi-angle colorimeter detects color changes in pearlescent coatings.
    Pearlescent coatings contain special flake pigments that produce color effects that vary with the viewing angle, known as "goniochromism." Traditional single-angle measurements struggle to accurately capture this characteristic.
    Application of Colorimeters in Controlling Color Differences in Paint Batches
    This article introduces the role of colorimeters in controlling color consistency in paint production. Since human judgment of color is easily influenced by lighting and subjective factors, colorimeters quantify color differences in the CIELAB color space by measuring spectral data, providing an objective basis for production.
    UV-Vis Spectrophotometer Measures Ink Pigment Concentration
    This article introduces the method of measuring the concentration of ink pigments using a UV-Vis spectrophotometer. The principle is based on the Lambert-Beer law, which calculates the concentration by measuring the absorbance of the pigment solution at specific wavelengths.
    The role of spectrophotometers in ink color matching
    The spectrophotometer objectively quantifies color by measuring the spectral data of ink. Based on the Lambert-Beer law, it converts color into calculable spectral values, replacing traditional methods that rely on the human eye and experience.
    Application of UV Spectrophotometer in the Determination of Lignin in Pulp
    This article introduces the application of ultraviolet spectrophotometry in determining the lignin content in pulp. Lignin is a key component affecting pulp quality. This method utilizes the characteristic absorption of lignin under ultraviolet light for measurement, offering simple and rapid operation.
    Determination of Chromaticity Value of Pulp by Spectrophotometry
    This article introduces the method for determining pulp chromaticity using spectrophotometry. It first explains the importance of chromaticity for pulp quality, then details the basic principles of spectrophotometry, which quantifies color by measuring the reflection of light from the pulp, typically expressed using the CIELAB color system.