Antibiotics (Antibiotic), also known as antibiotics, is a variety of organisms (plant, animal and microorganism, especially soil microbial metabolic activities) products, is also capable of selectively inhibiting the microorganisms in low concentration, virus and properties of tissue cells. The antibiotic has grown to more than 2000, but the actual application not much. The chemical structure of different antibiotics, character, according to their chemical structure can be divided into 32 categories, such as nucleosides, peptides, proteins, macrolide, polyene macrolides etc.
Chemical reagents are often spoiled by improper storage in storage. Some easy moisture absorption and deliquescence or hydrolysis reagent; some easily with oxygen in the air, carbon dioxide or other gases in the diffusion reaction, and some reagents affected by light and temperature will deteriorate. Therefore, according to the different properties of reagents, appropriate measures should be taken to properly preserve them.