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Technology for detecting impurity of wine

Alcohol lovers who often get cheated while buying whisky can now heave a sigh of relief,as British scientists have developed a new technology which they say could help detect whether the produce is genuine or fake.The technique,developed by a team from the University of Leicester,relies on detecting the differences between the characteristics of light reflected from the liquid inside the bottle or its label.
A white light is shone through the liquid and the spectrometer originally designed for astronomical research analyses whether the signature matches that of the genuine article or not,the NewScientist reported.
Its really important with whiskies and in wines is that you dont open the bottle and destroy the product, said George Fraser of the universitys Space Research Centre,where the spectrometer was first developed.What you have to try to do is find a way of multiple measurements through the glass and the liquid which allows us to factor out a signature,spectrally,which is characteristic of that liquid, he said.
There is a surface measurement of the bottle and case,but there is also a through-the-bottle transmission measurement which lets you characterise the liquid. Apart from taste,fake spirits can contain high levels of methanol,a chemical that can cause liver damage,blindness,coma,breathing difficulties and even death.

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