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Types of 3NH ISO Test Charts Products

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FAQs About  ISO Test Charts

Record the L*a*b values of the sample and the reference with a calibrated spectrophotometer or colorimeter. Compute the difference in the color by use of ΔE. The lower the Delta E, the more accurate the result. The difference in energy, ΔE < 1, is generally assumed to be invisible to the eye.


Colorimetry is a method that applies color intensity to ascertain the chemical concentrations. It is founded on Beer-Lambert Law, whereby the absorbance at a given wavelength is proportional to the concentration. It is popular in environmental and biochemical testing.

Ambient light may affect the test results and must therefore be kept to a low level for accurate haze meter results. 


Since part of the light will pass through the light-transmitting materials, the colorimeter is not suitable for color measurement of such kinds of materials; however, when place a pure color material with uniform texture under the light-transmitting material, we can measure the color difference between the standard and the sample. 

3nh high-precision spectrophotometers are the best choice for accurate color matching.

  1. TS8560

    Top-grade benchtop model with low ΔE value, excellent inter-instrument agreement, SCI/SCE dual mode and stable repeatability. Ideal for precise color matching of plastics, coatings and translucent materials.
  2. YS6002

    Integrated design for color difference, haze and transmittance testing. Perfect for color consistency control of films, glass and semi-transparent products.
  3. NS800 / NR60CP

    Cost-effective portable colorimeters, fast reading and easy operation, suitable for daily incoming inspection and production line color matching.


Usually you will find haze and transmittance standards of ASTM D1003, ISO 13468, & JIS K7105.


Further ISO Test Charts Applications and Solutions

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