With LiquidSens, SensAction, a brand of Endress+Hauser Flow Deutschland AG, presents an efficient measuring system for precise and reliable online monitoring of the concentration of cleaning media, hardening polymers and corrosion protection products in liquids - also in integrated or Industry 4.0 production. Even the smallest changes are measured and recorded. An app concept allows the system to be easily and quickly adapted to different applications. For the random monitoring of cleaning systems, a mobile device is also available in the form of the LiquidSens Mobile. The user guidance and memory management have been specially designed for monitoring several cleaning systems. Adaptation to the respective application is also simple via media apps.