Using optical measurements, the "MT01" transmits changes in the phenolic maturity of mixed grape juices directly to the laboratory. It is capable of quickly measuring anthocyanins, the total polyphenol index and the extractability parameters of the grapes. The measurements taken require neither a reagent nor maceration time.
The principle employed is that of a spectral analysis via diffuse reflection of opaque liquids containing particles in suspension.
The diffuse reflection component corresponds to the light penetrating into the inside of the sample. Once there, it is subject to molecular absorption, refraction and diffraction processes and multiple reflection, leading to its dispersion in all directions and, in particular, its return towards the reflection director.
By using a combined measure of reflectance and turbidity, the software calculates optical density across a range of different wavelengths.

The MT01 spectrometer is capable of measuring, in real time, the typical phases of grape maturation, without the need for a chemical reagent or maceration time.
IN JUST A FEW SECONDS and DIRECTLY ON MIXED GRAPES, the device performs the following analyses: Total anthocyanins, IPT (index of total polyphenols), nuance, AE% (anthocyanin extractability), MP% (seed tannin content)