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Conventional sensors struggle with the presence of particulate matter, leading to clogged junctions and unreliable results. Fruit juices contain suspended particles that can clog the ceramic junction of traditional pH sensors. This blockage hinders the flow of electrolytes, compromising the sensor's interaction with the sample and causing fluctuations in readings. Regular cleaning can help, but continuous use can still lead to sensor fouling. The note lists all such challenges and introduces a solution for achieving precise fruit juice pH measurement.
A specialist sensor like METTLER TOLEDO's InLab Max Pro ISM is specially designed to overcome the challenges of fruit juice pH measurement. Featuring an immovable glass sleeve junction, this sensor ensures consistent electrolyte flow, even in dense juice suspensions, assuring reliable pH measurements. The sensor also has a sleeve junction which prevents sample ingress into the reference system, minimizing junction blockage and allowing easy cleaning of the sensor.
Download our application note to discover more benefits of using the InLab Max Pro ISM sensor and good measuring practices for obtaining accurate results.
The following sections highlight additional facts about fruit juice and the importance of monitoring the pH of fruit juice.
Why is measuring the pH of fruit juice important?
Among the several intrinsic factors that affect the shelf life and spoilage rate of juice, pH, and water activity are the most influential. Variations of pH can influence flavor, consistency, and shelf life. Fruit juices usually have low pH values that range between 2.0 and 4.5 due to the presence of organic acids that vary within the different types of juices. In order to maintain consistency in the quality of juice, monitoring pH is important.
How are fruit juices preserved and what role does pH play in preservation?
One of the methods for the preservation and processing of fruit juices is pasteurization. High-temperature, short-time (HTST) pasteurization is preferred for perishable beverages as it prevents microbial growth and maintains freshness, color, and better flavor. pH also plays an important role in managing the parameters of these preservation techniques.
For further details on sensor selection, good measuring practices, and measurement procedures, download the application note by clicking the button above.
