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Nursing and operating techniques for the use of ice packs【Objective】 Cooling, hemostasis, analgesia, anti-inflammatory[Material preparation] Ice bag (ice bag) and cloth cover, towel, ice cubes, washbasin and cold water, mallet, canvas bag, spoon.【Instruction content】1. Inform the patient of the purp
Volumetric flasks cannot store standard stock solutions?Guide: 1. The volumetric flask is a measuring instrument. If the reagent or standard substance (especially corrosive, strong acid, strong alkali, etc.) is assembled for a long time, the volume of the volumetric flask may be inaccurate...1. The
How to realize scientific management of laboratory consumablesWhen purchasing materials, we should put the supply quality of the goods first. It is not only necessary to investigate and evaluate the qualifications, credibility, business scope and prices of suppliers; it is also necessary to regularl
The following will teach you how to properly maintain and maintain laboratory glass instruments by Nanjing Santa Buffalo. The details are as follows:Avoid strong thermal shock1. Wait for the temperature of the glassware to be the same as the room temperature. The thicker and heavier the glass, the l
Guide: Before using the new bottle, it should be simply brushed with tap water, and then soaked in dilute hydrochloric acid solution (5%) overnight...1. Washing of glassware(1) Immersion The new bottle should be simply washed with tap water before use, and then soaked in dilute hydrochloric acid s
Guide: 1. Burner: The main purpose of the burner is heating, so the wall thickness is required to be uniform, and it should not be too thin or too thick, so that it is better when heated...1. Burner: The main purpose of the burner is for heating, so the wall thickness is required to be uniform, and
Guide: After the volumetric flask is purchased, it must be cleaned and calibrated; so that it will be used only after the calibration is qualified...1. After the volumetric flask is purchased, it must be cleaned and calibrated to be used only after the calibration is qualified.2. Substances that are
Guide: The instruments that are often used in experiments should be washed and dried for use after each experiment. Different experiments have different requirements for drying. Generally, beakers, conical flasks and other instruments used for quantitative analysis can be used after washing. In
