Young specimens production of egg, larva, pupa specimens produced divided soaked, dried in two ways. Immersion with 75% alcohol, or 4% formaldehyde solution soaked. Without deformation of the parasite by insect specimens soaked supply before immersion teaching insect specimens should be fixed first, common methods are: Contrast large individual can be boiled with water or boiling water directly into the live worm to worm straight slightly harder, then hot dipped preservation solution. Individual small species, in order to prevent loss of material, can be placed in the preservation solution containing 75% ethanol in a glass tube and heated with a water bath, also the same effect. In addition to the above solution, but can also be used 15 parts of 80% alcohol, 10 parts of 40% formaldehyde solution, 1 part of glacial acetic acid prepared solution in preservation. This formula for the internal organization of the insect better fixation can be used as an insect anatomy saved for soaking. The disadvantage is that the long-term preservation of specimens easy to make darker, with a little precipitation. Big body for anatomical specimens (such as locusts, last instar silkworm larvae) can also be used syringe from the film festival between 4% formaldehyde solution for injection of live insects, the internal organs quickly fixed, and parasites stiff. Parasites after injection immediately immersed preservation solution. 1. Use insect collection tool insect net: lively insects generally suitable to use nets to capture. So there must be netted insect collection, sweep nets and water network. Netcom catch common patterns account or white nylon yarn made of mesh circle with a ring made of thick wire diameter of about 30 centimeters insect specimens, conical bottom bags. Dictyostelium is about one meter in length. Sweep nets mainly suitable for capturing insects in the grass. Burlap or linen is made available, slightly smaller than the netting. Dictyostelium is shorter (about a half feet or so) and the coarse mesh to be strong. In addition, net bottom sweep net is open. Water networks and netted roughly the same, but made of muslin, and network relatively shallow, and Dictyostelium longer. Poison bottle: when collecting general should bring two bottles of poison, a poison bottle butterflies and moths butterfly insect specimens, another bottle of poison other types of insects. Straight poison bottle shaped bottle made available, can also be flat-bottomed jars or tubes or the like. Toxic agents such as sodium or potassium cyanide can also be used dichlorvos, ammonia, ether. Preschool insect specimens insect specimens _ _ teaching voyage by voyage Teaching Equipment Co. Xinxiang. Xinxiang City voyage Teaching Equipment Co. (www.xxyuanhang.cn) strong, credible, in Xinxiang specimen model industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the voyage into the brilliant teaching and you work for a better future!