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Environmental protection, consistent product quality, process optimization and safety – just a few reasons why liquid analysis is becoming increasingly essential. Liquids such as water, beverages, dairy products, chemicals and pharmaceuticals have to be analyzed day in and day out. We support you in fulfilling all these measuring tasks with application know-how and cutting-edge technologies. Discover our comprehensive portfolio and choose the product best suited to your process needs.
The pH value is used as a unit of measurement for the acidity or alkalinity of a liquid medium. The pH-sensitive element of glass electrodes is a glass bulb that supplies an electrochemical potential which is dependent upon the pH value of the medium. This potential is generated because small H+ ions penetrate through the outer layer of the membrane while the larger negatively charged ions remain in the solution.
Glass pH probes contain an integrated Ag/AgCl reference system that serves as the required reference electrode. The pH value is calculated from the potential difference between the reference system and the measuring system using the Nernst equation. Our pH sensors and transmitters achieve outstanding linear measuring performance over an extremely wide pH range!
The measuring principle of enamel pH electrodes corresponds to that of glass pH sensors, however, the pH-sensitive element is enamel.
The pH value is measured with an ion-selective field effect transistor (ISFET). It is a simple transistor with a source and drain that are separated from the base by a semiconductor. Hydrogen ions from the medium may accumulate here. The resulting positive charge on the outside is 'mirrored' on the inside of the base where a negative charge occurs. This makes the semiconductor channel conductive. The more H+ ions accumulate on the base, the more current can flow between the source and drain.
Liquiline is the ideal platform for all liquid analysis applications and forms the basis for our state-of-the-art transmitters, analyzers and samplers. The uniform operation across all products offers convenience and ease of use and protects your process from operating errors. Liquiline’s standardized components optimize your spare part stock and so provide significant cost savings. Better still, our Liquiline products can be easily expanded for full flexibility in the future
In many applications conductivity is crucial for process control, product monitoring, water monitoring, or leakage detection. We provide reliable and accurate instruments for all measurement ranges and conditions, such as ultrapure water, CIP cycles, hazardous areas or hygienic processes