Testing for Gold's purity, involves the use of strong acids. Gold is a noble metal that is resistant to change by corrosion, oxidation, or acids. In order to distinguish gold from other base metals, the gold-containing item is rubbed on a black stone/surface which will leave a visible mark. Nitric A

In the chemical laboratory, various harmful odorous gases, odors, moisture and corrosive substances will be generated during the experimental operation. In order to protect the safety of users and prevent the pollutants in the experiment from spreading to the laboratory, it should be used fume hood

Fossil fuels are non-renewable resources that provide 80% of the world’s energy. The burning of fossil fuels generates a large amount of energy which goes to heating, electricity, and transportation. Despite being beneficial, this efficient energy source negatively impacts the environment. Biomass a

Yesterday, We have received payment from the winning project in the Philippines. The amount of this winning project is nearly 120,000 US dollars. The products that won the bid mainly include 16 units biochemistry analyzers, 20 units freezers, 18 units water purifiers, etc.

Fume hoods are designed to provide personnel protection from toxic or volatile chemicals by continuously delivering airflow away from the user to the work area. Air is then filtered and/or treated by the building’s exhaust system before exiting the facility (ducted) or by filters contained in the fu