Search results for keyword: ppm
Korean low carbon carbon structural steel steel grade
Low Carbon Steel Structures in South Korea
South Korea has seen rapid development and industrialization in recent years, and its steel industry has become one of the most important in Asia. Consequently, the demand for various types of steel, including low carbon steel structures, has grown signi......
1060 
Liam
Nickel-chromium resistance alloy wire (YB/T5259-1993)
Nickel-chrome Resistance Alloy Wire
Nickel-chrome resistance alloy wire is a product commonly used in electrical engineering. Compared to other resistance materials, it has a large resistance range and high long-term temperature stability, making it ideal for use in temperature measurement, stabi......
Crustal abundance
The crust is the outermost layer of the solid Earth and composed of two major types of rocks: the oceanic crust and the continental crust. The abundance of crustal rocks varies with location and depth, but can be measured in parts per million (ppm) or billion (ppb). The continental crust contains ......
Fluidized chlorination workshop
Pumping chlorination is one of the most common methods used to disinfect large public water systems. The process involves pumping in a measured solution of chlorine gas, sodium hypochlorite or other chlorine-based compounds into a holding tank of water. From there, the chlorinated water is distrib......
Detection and automatic control of gas recovery - ammonium sulfate manufacturing equipment
Abstract
This article introduces a new coal gas recovery and automatic control system for an ammonia sulfurization equipment. This system can accurately detect, analyze and control the coal gas flow rate and the operating temperature in the sulfurization reactor, ensuring the safety and efficienc......
source of hydrogen in steel
The Source of Hydrogen in Steels
Steel is one of the most commonly used materials in the world, with its properties and uses that are applicable in many industries like construction, maritime and automotive. But steel is a complex material, we have to take into account elemental composition and a......
Dimethyl Sulfate Poisoning
Methylene Diphenyl Diisocyanate (MDI) Poisoning
Methylene Diphenyl Diisocyanate (MDI) is an industrial chemical mainly used in the production of polyurethane foam. It is also used in the production of automobile parts and other items such as furniture, clothing, and building materials. MDI is a t......
Environmental Quality Index
Introduction
Air pollution has become a serious problem in recent years. The pathogenic elements contained in air pollution can not only bring great harm to peoples physical health, but also have an adverse effect on the environment, which has a profound impact on the continuous and healthy devel......
ACM-02 Laboratory COD Meter
ACM-02 COD Testing Instrument
COD stands for Chemical Oxygen Demand and refers to the amount of oxygen used by organic materials in water. It is used to measure water quality, since organic material often indicates a deterioration of water quality. The ACM-02 COD Testing Instrument is a reliable,......
NOx monitoring
Nitrogen Dioxide Monitoring
Nitrogen dioxide is a pollutant gas that can be found in the air in both urban and rural environments. It is created as a by-product of combustion processes, as well as certain industrial processes, such as the production of cement, fertilizer and some metal ores. Nitro......
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