As the consumption of plastic products continues to increase, the amount of waste plastics continues to increase.
At present, Chinese waste plastics are mainly plastic film, plastic wire and woven goods, foam plastics, plastic packaging boxes and containers, daily-use plastic products, plastic bags and agricultural mulch films.
In addition, the annual consumption of plastics for automobiles in China has reached 400,000 tons, and the annual consumption of plastics for electronic appliances and home appliances has reached more than 1 million tons. These products have become one of the important sources of waste plastics after being scrapped.
It is understood that in 2011, the amount of waste plastics produced in China was about 28 million tons, and in 2012 it was 34.13 million tons. The storage, transportation and processing of these waste plastics, pending the application and post-treatment of the discarded plastic raw materials, will inevitably damage the environment and endanger the health of the people.
Plastic Pyrolysis Plant,Automatic Plastic Pyrolysis Plant,Abs Plastic Pyrolysis Plant Shangqiu Zhongming Eco-Friendly Equipment Co., Ltd. , https://www.sqzhongminggroup.com
First, the accuracy classification ph meter instrument can be divided into 0.2, 0.1, 0.02, 0.01 and 0.001 level, the smaller the number, the higher the precision.
Second, the reading indication classification can be divided into two kinds of analog and digital display. Pointer pH meters are rarely used today, but pointer meters can show continuous changes in data and are therefore used in titration analysis.
Third, the classification of component types 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 size of the instrument and stand-alone costs; but the development cost of the chip is very expensive.
Fourth, according to the use of environmental categories 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. The laboratory pH meter is a desktop high-precision analytical instrument that requires high precision and full functionality, including printouts, data processing, and more. Industrial pH meters are used for continuous measurement of industrial processes. They not only have measurement display functions, but also alarm and control functions, as well as installation, cleaning, anti-interference, and other issues.
There are many classifications of acidometers, which can be classified from different precisions. The reading index can also be classified. The use environment and component types can still be categorized. The following is a brief introduction. The main categories of acidometers indicate that different classifications are different according to different situations. , pH meter manufacturers - PH meter manufacturers - SECCO environmental protection equipment.