Caustic residue detection for bottle washing
During the cleaning of returnable containers, residual traces of caustic may remain. Detecting these small amounts of caustic is crucial to ensure product safety and quality.

Detect even the smallest caustic traces
The separate caustic inspection unit from Krones utilizes high-frequency technology to detect even the tiniest traces of caustic left in returnable containers after cleaning. When any trace of caustic is detected, the unit immediately stops the filler and conveyor, preventing the container from proceeding further. This highly reliable system is compact and mounted directly on the conveyor, requiring no interruption or redirection of the product flow. The unit operates without any contact with the containers, ensuring gentle treatment. Additionally, only authorized personnel can change the settings, adding a layer of security. The system features waterproof housing and sensors and includes an option for an acoustic warning unit. Installation and commissioning are straightforward, making it a practical solution for maintaining product quality.
Benefits
- Ensures optimal product quality by detecting smallest caustic residues
- Compact and does not require interruption of product flow
- Gentle non-contact operation
- High operational reliability with restricted access settings
- Simple installation and clear status visibility