Various classification methods for laboratory instruments and pH meters
There are many classifications of acidity meters, which can be classified based on different accuracies, reading indices, and usage environments and component types. Below, we will briefly introduce the main categories of acidity meters.
1, Precision classification
PH meters can be divided into 0.2, 0.1, 0.02, 0.01, and 0.001 levels, with smaller numbers indicating higher accuracy.
2, Reading indication classification
It can be divided into two types: pointer type and digital display type. Pointer pH meters are rarely used nowadays, but they can display continuous changes in data, so they are still used in titration analysis.
3, Classification of component types
It can be divided into transistor type, integrated circuit type, and microcontroller microcomputer type. Nowadays, more microcomputer chips are used, greatly reducing instrument volume and single machine cost; But the development cost of chips is very expensive.
4, Based on the type of environment used
It can be divided into pen type pH meters, portable pH meters, laboratory pH meters, and industrial pH meters.
The pen type pH meter is mainly used to replace the function of pH test paper, and has the characteristics of low accuracy and convenient use. Portable pH meters are mainly used for on-site and field measurement methods, requiring high accuracy and complete functionality.
A laboratory pH meter is a desktop high-precision analytical instrument that requires high accuracy and full functionality, including printing output, data processing, and so on. Industrial pH meters are used for continuous measurement of industrial processes, which not only require measurement display functions, but also alarm and control functions, as well as considerations for installation, cleaning, anti-interference, and other issues.
