Control of Error Sources in the Process of Food Physical and Chemical Testing
Time of Update: 2021-09-16
As a physical and chemical testing worker, you need to understand the source of errors in the testing process, and take corresponding measures to eliminate or reduce the errors, so as to improve the accuracy of the testing results .
Production principle and technical formula of m-chloroaniline
Time of Update: 2021-08-28
6. Production processAdd 850L of water, 700kg of iron filings and 70kg of ferrous sulfate to the reduction reaction kettle, stir and raise the temperature to 95°C, add 600kg of m-nitrochlorobenzene dropwise within 5h, and control the reaction temperature at 100-102°C .
The construction environment requirements of water-packed water colorful paint
Time of Update: 2021-01-18
China Paint Online News Information: Water-wrapped water colorful paint is a new type of paint products in the 21st century, for the architectural decoration industry has brought new development advantages, but the construction quality of the paint products need to be very careful, is a more complex process we generally consider the following conditions can be: 1, raw material selection: good materials are the basis of finished product quality, to carry out a serious examination on the ground.
Analyze the advantages and disadvantages of water-based epoxy coating modification methods
Time of Update: 2020-11-26
The advantages of water-based coatings are obvious compared to solvent-based coatings. Such as low VOC, small odor, safe use, can be washed and so on. Water-based epoxy form resins can form three wate
Soil Analysis Using Visible and Near Infrared Spectroscopy
Time of Update: 2020-11-14
Visible-near infrared diffuse reflectance (vis-N IR ) spectroscopy is a fast, nondestructive technique well suited for analyses of some of the essential constituents of the soil.
Here we describe the process by which vis-NIR spectroscopy can be used to collect soil spectra in the laboratory.