Dried specimens: Plant Herbarium specimens of plant herbarium specimens to be kept in a sealed cabinet dry herbarium specimens. Because the new system specimens often parasitic insects and eggs, into the best medicine cabinet disinfection. Is filled with carbon disulfide about 0.5KG Puyang plant specimens in the container, put insecticide box (1.7 square meters) in two days out of the box, so that the gas cleared, took specimens. Carbon disulfide oxygen gas is heavier than air. Drugs should be placed on top of the specimen. No paper or to specimens came into mercuric chloride 0.5% alcohol (75% for industrial use) was immersed once herbarium box, after a good system into the hood. Mercuric chloride) toxic, and not chemical reaction with the metal, should not use metal instruments. When used to bring rubber gloves, wash hands with soap afterwards Northern specimens insecticidal what drugs should be marked on paper in Taiwan, to prevent poisoning. To put camphor fine against pests within herbarium specimens hood. Prepare specimens commonly used preservative fixed drug, what disadvantages? Glycerol: glycerol scientific name, is a colorless, transparent, odorless, viscous liquid with a sweet. Disadvantages: a low concentration of glycerol permeability of poor plant specimens, the preparation of a mixed preservative fixative, and also reduce the rate of penetration of other drugs. Processed specimens take longer to apply. 2. High concentrations of glycerol, viscous, and have a great resistance to injection. Specimens produced by glycerol, sticky slippery stagnation Hebei plant specimens, anatomical maneuver. To make up for the shortcomings of poor permeability of glycerol, polyols from someone finds a better penetration of sorbitan alcohol instead of glycerol, which is shared with an alcohol-based solution, will enhance the penetration penetration properties. Hebei plant specimens, voyage teaching (certified), plant specimens provided by Xinxiang City Teaching Equipment Co. voyage. Xinxiang City voyage Teaching Equipment Co. (www.xxyuanhang.cn) is an industry leader in Henan Xinxiang, specimen model years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. On the voyage instructional leadership with the staff warmly welcome all inquiries negotiations to create a better future teaching voyage.