General knowledge necessary to purchase pH meter and ph meter

pH meter, ph meter classification: application classification, instrument accuracy, reading instructions, component type classification; and what is a laboratory pH meter, what is an industrial pH meter.

(1) According to the application category: can be divided into pen PH meter, portable PH meter, laboratory PH meter and industrial PH meter. Pen pH meter is mainly used to replace the function of pH test paper, with low accuracy and easy to use features. The portable pH meter is mainly used for on-site and field measurement methods, requiring higher accuracy and improved functionality.

(2) According to the instrument accuracy classification: can be divided into 0.2, 0.1, 0.02, 0.01 and 0.001 level, the smaller the number, the higher the precision.

(3) Classification according to reading instructions: It can be divided into two types: pointer type and digital display type. Pointer pH meters are rarely used today, but pointer meters can show continuous changes in data and are therefore used in titration analysis.

(4) According to the classification of component types: it can be divided into transistor type, integrated circuit type and single-chip micro-computer type, and now more is the application of micro-computer chips, which greatly reduces the instrument size and stand-alone cost; but the development cost of the chip is very expensive. Laboratory pH meter: The laboratory pH meter is a desktop high-precision analytical instrument that requires high precision and full functionality, including printout, data processing, and more. Industrial pH meter: Industrial pH meter is used for continuous measurement of industrial processes. It not only needs measurement display function, but also alarm and control functions, as well as installation, cleaning, anti-jamming and other issues.