There Are Many Types Of Reagent Bottles

Glass or plastic bottles containing reagents can be classified in various ways according to color, shape and purpose.
Glass, plastic; glass plug, rubber plug; wide mouth, narrow mouth; brown, transparent; ground mouth, non-ground mouth and other classification methods.
Hydrofluoric acid should be stored in plastic bottles, and glass bottles are generally used for other reagents.
Alkaline substances such as sodium hydroxide and water glass should use rubber stoppers instead of glass stoppers. Benzene, toluene, ether and other organic solvents should use glass stoppers instead of rubber stoppers.
Wide-mouth bottles are used to hold solid reagents, and narrow-mouth bottles are used to hold liquid reagents. The liquid bromine is stored in a narrow-mouth bottle, and water is added to the liquid surface to make it "water-sealed", and the bottle mouth is sealed with wax. Small amounts of white phosphorus should be kept in water.
Reagents that are easy to decompose or deteriorate when exposed to light are generally stored in brown bottles, such as nitric acid, silver nitrate, chlorine water, etc. Store in a cool dark place. Others generally use colorless bottles.
The bottle with ground stopper (the interior of the bottle is designed with a frosted finish) can keep the seal, preventing the reagent from absorbing moisture and changing the concentration. A bottle with a ground dropper is called a drop bottle. Reagents that deteriorate due to the absorption of carbon dioxide or water vapor should be sealed and stored (such as NaOH, lime water, bleaching powder, water glass, Na2O2, etc.). Concentrated hydrochloric acid, ammonia water, iodine, benzene, toluene, ether and other low-boiling organic substances are stored in bottles sealed with plastic caps and placed in a cool and dark place.
Among the reagents that are easily oxidized and deteriorated, active picks such as potassium, sodium, and calcium are stored in kerosene; potassium iodide, ferrous sulfide, and sodium sulfate are usually stored as solids instead of solutions; Put a small amount of iron powder or nails.
The vast majority of laboratories in the world use reagent bottles produced by German companies, because their lids are made of blue plastic, also known as blue cap reagent bottles.