Sorting gets challenging when defects deviate from the usual. RGB and NIR optical sorting fail when it comes to separating white paddy rice from red-bran rice, durum from soft wheat, dent maize from sweet corn or sound maize kernels from those without germ.

When size, weight and colour fails, the PETKUS/ROEBER OS 901 t comes into play.
The strong, homogeneous and high quality LEDs inside the OS 901 t as well as the special light configuration allows for a look through some grain species. Using this new and very intensive “translucent” light, the appearance of a kernel with a specific defect such as a missing germ in maize due to insect attack looks different. This is the uniqueness compared to other optical sorters: variable luminance for variable defects, combined in one platform.