Spectrophotometer
A spectrophotometer is a more complex color measuring instrument that relies on light intensity with a color function. It performs color measurements across the entire spectrum, as opposed to the colorimeter's three-primary color-based process and produces color data beyond the human eye's range of vision.
Spectrophotometer CM-5 
Spectrophotometer CM-26d 
Employees at Polyplast Vietnam company use spectrophotometric color devices to test the color quality of colored plastic resins
Functions
Desktop or handheld models.
Advanced solution for complex color measurement needs.
More features.
Greater accuracy from full-spectrum color measurement.
How it works
The internal light source radiates into the diffraction grid, which acts as a prism that separates light into different wavelengths of the full spectrum.
As the grid rotates, only a specific wavelength of light reaches the exit slit and interacts with the sample at a time.
The detector measures the light intensity, transmittance and absorbance of the sample.
The spectrometer displays this information digitally.
Functions
Color measurement
Color combination
Check color accuracy throughout the production process
Maintain color consistency throughout the supply chain
Detecting meta phenomena
Measure opacity and opacity
Color quality control
Detect impurities