Contact chemistry people have seen cylinder, set cylinder, funnel, thermometer, dropping bottles, watch glass, jars, small jars, test tubes, pan, crucible, burning key, beaker, flask, conical Shaped bottles, which are needed for chemistry experiments chemistry instruments.One cylinder, set cylinder, funnel, thermometer, dropping bottles, watch glass, jars, small jars is not heating equipment, test tubes, pan, crucible, burning key is direct heating, indirect heating of a beaker , flask, Erlenmeyer flask. Chemical Instruments in the course of many precautions, such as when using the plastic head dropper plastic head on the nozzle below (to prevent liquid reagent into the plastic head and leaving rubber or plastic head of corrosion of impurities into the test header Liquid; dropper nozzle can not be inserted into the container by the drop (to prevent the dropper stained with other reagents); immediately after the use of clean and wash the test tube inserted in a clean, wash the dropper is strictly prohibited without drawing other reagents; dropping bottle The dropper must be supporting the use of drip bottle.
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Join date : 2010-11-02
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