Purpl Pro Information

Does anyone know what the technology behind this device is? Any data on repeatability of measurements?

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As I understand it VTech behind this is using the light that refracts off different compounds. This machine requires you to grind the sample up into a homogeneous mix to get accurate readings. For a non-destructive device there is one out of Israel that I have done some work with and is extremely reliable. It is called gemmacert and if you are interested I can certainly hook you up with the owner of the company.
Cheers,
Craig

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