实验室中化学药品的蜡封式保护

Wax-Sealed Protection of Chemicals in Laboratory

试剂瓶封闭不严,使气体向瓶内外流动,是造成很多化学药品发生变化的主要原因.气体流动的量越多,化学药品变化的程度就越大.化学药品运用蜡封式保护,其效果最好.分析和叙述了熔融态石蜡的表面张力、蜡封的适宜温度.确定了蜡封的位置,叙述了楔形笔的制作以及蜡封的操作过程和方法.

The reagent bottle was not sealed tightly, so the gas flowed in and out of the bot- tle, which was the main cause of many chemicals changes. The effect of using wax-sealed protection of chemicals was the best. This paper analyzed the surface tension and appropriate temperature of molten paraffin wax, determined the position of wax-sealed, and described the making of wedge pen, operation process and method of wax-sealed.