FIELD: process engineering.
SUBSTANCE: device comprises at least one illumination unit (6) and at least one chamber (7). Note here that said illumination unit (6) is located above inspected bottle (2). Said illumination unit (6) is composed of the panel of light sources (8) irradiating colour-variable light in compliance with the colour of last bottle in the area of neck (3). Note here that said light sources (8) are arranged in circles (9) around the panel centre (6) and space radially apart. Radiated light is fed inside bottle neck wall. LEDs emit at least colour-modulated light complying with bottle colour to be fed into bottle neck (3) wall.
EFFECT: reliable detection of dirt.
22 cl, 3 dwg
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