Seidenader V90-AVSB/75-LR semi-automatic inspection machine for freeze dried products (LYO) for detection of particles and cosmetic defects in ampules, vials etc. Adjustable high-precision rollers allow high speed rotation of ampules, vials and bottles, ranging from 0.5 ml to 1,000 ml in size, whirling up particulate matter in liquids. A glare-free system of concentrated light beams make any particulate matter more easily visible through the Tyndall effect. Light refracts off the particulate, making it glow like a small light bulb against a dark background. Cracks and cosmetic defects can be detected in the bottom of the container as well as the entire sidewall and cap area.