With the approval of the State Council, the Ministry of Human Resources and Social Security will hold the National Vocational Skills Competition from 2020. The First Vocational Skills Competition of the People's Republic of China was held in Guangzhou from December 10th to 13th, and the competition kicked off on the morning of the 10th. With the theme of "New Era, New Skills, New Dreams", the first competition set up 86 competitions, with a total of more than 2500 contestants and more than 2,300 referees participating in the competition. The competition draws on the concept and model of world competitions and introduces technical standards and competition It is a comprehensive national professional skills competition with the highest specifications, the most projects, the largest scale and the highest level since the founding of the People`s Republic of China. The skill competition has the meaning of "weathervane". Relying on high-quality products and high-quality services, [REX" successfully won the bid of the first National Vocational Skills Competition Water Treatment Technology Project Equipment and Equipment Purchase Project for the PHS competition. In addition, Lei Magnetic also sponsored the WZB-175 turbidity meter for the turbidity detection project in the water treatment technology project of the competition. Our on-site engineers follow up the entire process from entering the museum, to assembly and setup, calibration and commissioning, on-site support, etc., to escort the smooth holding of the contest and obtain high recognition from the organizer.

On December 16-18, 2020, the "Fifteenth World Pharmaceutical Machinery, Packaging Equipment and Materials China Exhibition" (P-MEC China 2020) will once again land at the Shanghai New International Expo Center. The exhibition focuses on thematic forums and special events on the topics of sterile preparations, solid preparations and traditional Chinese medicines, pharmaceutical factory intelligent manufacturing, biological preparations, API production, clean plant management, green pharmaceuticals, etc., presenting the overall global development trend and production technology of the pharmaceutical machinery industry , Optimization and updating of machinery and equipment, in-depth communication and cooperation, and multi-angle discussion of industry development As an important birthplace of China's analytical instruments, Shanghai INESA will bring its products under the "REX" brand to this grand event. At the same time, there will be a variety of new products and solutions gathered at this exhibition. We sincerely invite you to visit and communicate And seminars, please come!

1. What is mercaptan sulfur in oil? Mercaptans are a class of non-aromatic compounds containing sulfhydryl functional groups (-SH). The structure is equivalent to the replacement of oxygen in alcohols by sulfur, such as ethanol (commonly known as alcohol) CH3CH2OH and ethyl mercaptan CH3CH2SH. There are a small amount of mercaptan compounds in petroleum products. The presence of mercaptan not only causes the oil to have an unpleasant smell, but also transforms into toxic and corrosive sulfur dioxide and sulfur trioxide during combustion, which is harmful to the elastic materials of the fuel system. It also corrodes the components of the fuel system, affecting the life of related machinery, such as automobile engines. Therefore, it is very important to control the mercaptan content in petroleum products. 2. The sulfur contained in mercaptan in oil is called mercaptan sulfur content. National standards mandate the mercaptan sulfur content in a series of oil products such as gasoline, diesel, kerosene, distillate fuel, and jet fuel. So how to determine the content of mercaptan sulfur in oil? . Use potentiometric titrator to determine mercaptan sulfur content in oil (1) Instrument: REX ZDJ-5B Automatic Potentiometric Titrator (2) Electrodes: 216 type silver electrode and 231-01 type pH glass electrode. (3) Reagents: ultrapure water, 1-butanethiol, 1-heptanethiol, potassium iodide, concentrated nitric acid, isopropanol, sodium acetate, sodium sulfide, silver nitrate, etc. (4) Sample: commercial gasoline; butane mercaptan standard solution (5) The measurement process is as follows: Electrode pretreatment ----- Standard solution----- Blank titration----- Sample Measurment