LS177 Large Aperture Spectrophotometer adopts D/8 illumination mode and has a large test aperture of 50mm, which is professionally used for color and color difference measurement of non-transparent materials such as powders and particles. The instrument has a variety of color spaces and color parameters, and can also display spectral reflectance curves, which is widely used in color management and quality control in coatings, plastics, food, pharmaceuticals and other fields. The instrument is also equipped with professional mobile APP and PC software, which supports data export and report printing.

The measuring diameter is up to 50mm, which is especially suitable for color difference measurement of uneven surface objects such as masterbatches, powders, and coarse cloths.
Using full-spectrum LED light source and advanced spectral sensor, it provides professional spectral reflectance curves, provides more professional color data for measuring colors, and obtains hue, saturation, depth and other information.
High precision, ultra-high repeatability, standard deviation △E*ab≤0.03, in line with the national first-class measurement standard.
A special sample container is provided for the measurement of materials such as masterbatches, powders, and opaque liquids.
With QC detection function, you can set the color difference threshold by yourself, and the instrument will automatically judge whether the color difference is qualified.
The measured color parameters include CIE Lab, LCh, Luv, Yxy, CMYK, RGB, yellowness-98, whiteness-98, whiteness-Gauz, whiteness-Hunter, whiteness-R457, spectral reflectance and other parameters.
The instrument has a built-in multi-industry general electronic Color Chart, which can quickly match the closest Color Chart number during color measurement, and the Color Chart matching accuracy is greater than 90%.
With the 7-inch color touch screen, color aberration can be measured with just two clicks, and the operation is extremely simple.
It can be connected to the APP to use it and realize color sharing on the APP. With PC software, it has a stronger statistical analysis function of color difference, and can import and export instrument storage data.


JJG 595-2002 V. R. of Color Colorimeter
GB/T 3978-2008 Standard Illuminator and Geometric Conditions
GB/T 7921-2008 Uniform color space and color aberration formula
GB/T 11186.1-1989 Measurement method for coating film color Part 1: Principle
GB/T 11186.2-1989 Methods for measuring the color of the coating film Part II: Color measurement
GB/T 11186.3-1989 Measurement method of coating film color Part 3 Calculation of color difference
GB/T 39822-2021 Plastics -- Determination of yellow index and its change value
GB/T 17749-2008 Expression of whiteness
ASTM E313-98 Standard Operating Procedure for Calculating the White and Yellow Indices of Instrumentally Measured Color Coordinates