The use and precautions of the narrow mouth reagent bottle

In laboratories or in some instrument rooms, we can often see bottles with different mouth sizes and colors. Whether it is a wide-mouth bottle or a narrow-mouth bottle, white or brown bottle, all belong to a kind of reagent bottle, and the purpose of the bottle mouth is different.

The neck area of the narrow-necked reagent bottle is small, about one-third of the neck area. The contents stored in it are not easy to spill out, and it can also avoid the volatilization of liquid reagents, so it is more suitable for storing liquid reagents. That's why the name of the bottle comes from. Thin-necked bottles generally have two colors, transparent or brown. Different colors have different uses. Transparent bottles are used to store general reagents. Brown reagent bottles are used to store reagents that need to be protected from light, such as nitric acid and silver nitrate.

Although the narrow-necked reagent bottle is good, there are many points to pay attention to when using it. For example, there is no way to heat the conical bottle. The liquid in the conical bottle is easy to be contaminated and also easy to deteriorate. Therefore, be extra careful when taking the liquid. If the reagent in the conical bottle is contaminated, then this bottle The liquid is all spent. When pouring the liquid, the label should face the palm of the hand, otherwise the label will be easily corroded. If the alkaline liquid is stored in the reagent bottle, only a rubber stopper can be used. In addition, the bottle stopper should be placed upside down on the table, otherwise stains on the bottle cap will contaminate the reagent.

Mastering the purpose of different reagent bottles can ensure the stability of reagents and is also a basic condition for successful experiments.