ＰＨ Value Measurement
TheｐＨ (power of Hydrogen) value is a measure of the acidity or alkalinity of a material, typically of aqueous solutions. It is measured on a scale of 0 to 14, where 7 is neutral, 0 – 6 is acidic and 8 -14 is alkaline. Measuring theｐＨ of a material is a very important procedure in many industries, particularly in food and beverage, pharmaceuticals and water treatment.
TheｐＨ value is measured using a range of analytical instruments. TraditionalｐＨ measurement instruments are based around the graphical or pH meter, which can either be manually operated or automated to measure theｐＨ of a material. The electrode contained within the meter converts theｐＨ of a sample into an electrical signal which is then measured and displayed on a screen. The skilled user can interpret theｐＨ value and also analyse any changes over time if the same sample is measured in succession.
It is becoming increasingly popular to use portableｐＨ meters which allow the user to quickly and accurately measure theｐＨ of a material in the field. These meters are often battery powered and allow for a rapidｐＨ measurement with minimal effort. They can also generate more information than a graph based meter, such as temperature and dissolved oxygen levels. This can give a more comprehensive picture of the material being analysed.
Another option forｐＨ measurement is the use of probes and sensors which are typically mounted on the wall or in a holding tank. These probes can measure and monitor theｐＨ level of a material in real-time, adjusting their readings as the sample changes. This is an invaluable tool for industry, particularly in water treatment whereｐＨ levels must be closely monitored to ensure a safe product.
Overall,ｐＨ values are essential measurements for many industries. There are many methods of measuring them, ranging from simple and cost effective graph based systems to more complex and accurate sensors, probes and portable meters. With an understanding of the processes involved, it is possible to accurately measure theｐＨ of a material.
