CHANGCHUN — The northeastern Chinese cities of Changchun and Jilin, hardest hit by the fresh outbreak of COVID-19, have distributed millions of COVID-19 self-test antigen kits to citizens, including students, to accelerate massive epidemiological screening. Starting from 4 am Wednesday, Changchun, the capital of Jilin province, has given out more than 3.34 million self-test kits to part of its urban …
Disposable sterile sampling swabs are free from bacteria or other living microorganisms. Generally used for biological sample collection to avoid sample contamination, and for medical use to avoid infection. The material and appearance design of the sampling swab will directly affect the sample collection effect. 所以, what standards do disposable sterile sampling swabs generally meet? Sampling swab head Synthetic fibers …