2-way Sorter


Products are scanned in free-fall by a powerful camera system, based on NIR Spectroscopy. The spectral information is transferred into a false-colour image. This allows invisible defects and foreign substances to be detected by their chemical structure/components. Unwanted parts are immediately ejected by high pressure air jet valves.

Applications are possible at any kind of food, like fresh or IQF fruits and vegetables, nuts, dried fruits, cereals and more. 

Sherlock Air Informationsblatt


Examples: Optical Images, top row; Chemical false-colour image, bottom row.

Wild and frozen Blueberries
cap stems, attached leaves (here in blue) and blue-berry-beetles are detectable

walnut shells (red) separate clearly from the nuts (green)


unwanted parts of different kind (Cardboard, Plastic, Wood, etc. in red) and Champignons (green) are easily separable.

Peach halve
peach halves in green are easily separable from the red Stone fraction.


                                                    Sherlock Air - Technical Data
 Sensor System Chemical Imaging Technology G2
      Spectral Range 950 nm - 1700 nm
 Working width 600 mm, 900 mm, 1200 mm, 1500 mm




One defect which is common to all nuts is rancidity the process by which unsaturated fats hydrolyze or autoxidize into short-chain ketones or aldehydes which are objectionable in both smell and flavor. It is a problem which continues to plague all nuts, but particularly those nuts high in unsaturated fats, including walnuts, Brazil nuts, macadamia nuts, pecans, and hazelnuts.

On top of outstanding capabilities in foreign material detection, Insort GmbH has now introduced a patent pending highly accurate method of detecting rancidity in nuts. Using Chemical Imaging Technology (CIT®), the Insort Sherlock Air has been proven to detect walnut kernels from early stage to high level of rancidity. The operator may decide, up to which grade the machine should remove the kernels or if it should simply monitor the quality.

CIT® has the ability to determine the chemical composition of food inline and in real time by means of Near Infrared Spectroscopy. This enables making invisible defects for the human eye visible to the system and offers high potential for future developments and applications in the tree nut processing industry.

The technology is being used at GoldRiver Orchards, a walnut processor based in Escalon, California and INC member. “We were the first tree nut company in California to purchase the Sherlock Air, and we could not be more impressed with the accuracy and efficacy of the Insort technology”, said Don Barton, President of GoldRiver Orchards. “Before, we had no electronic or automated method of detecting this defect, so rancid walnut kernels had to be removed by hand. Now we have a very elegant solution, thanks to Insort. The Sherlock sees rancid kernels with an extremely high degree of accuracy, and has eliminated the need for our pack room inspectors to have to look for this defect any longer.”