What are the classifications of reagent bottles?
As the name suggests, a “reagent bottle” is a bottle used to hold “chemical reagents”, usually made of glass.
Reagent bottle: according to the purpose of holding the reagent, it can be divided into: wide-mouth bottle, thin-mouth bottle, gas collection bottle, drop bottle, etc.
A wide-mouthed bottle for holding solid reagents with a grinding neck
A narrow-mouthed bottle used to hold liquid reagents with a grinding neck
gas collection bottle, can be used to collect gas or conduct experiments, the bottle mouth above the grinding mouth
Drop bottle, easy to use a small amount of liquid, there is a grinding mouth on the glue head dropper
Special remind
Q: How can we distinguish between a wide-mouth cylinder and a gas collector cylinder, which are similar in appearance?
A: The difference between the wide-mouth bottle and the collection cylinder mainly depends on the “frosted part”. The frosted part of the wide-mouth bottle is in the neck, because it needs to contact with the “cork”; The matte part of the collecting cylinder is at the top, because it needs to contact the “glass sheet”. In chemical instruments, the contact parts of two glass instruments usually need to be frosted to enhance sealing.
Q: The wide-mouthed bottle, the narrow-mouthed bottle and the drop bottle are all colorless and brown in the illustrations. When to use brown bottles?
A: The reagent in the brown bottle should be kept away from the light. Generally, it is easy to decompose, volatilize, sublimate or react with the light. Keep the reagent in the brown bottle. Such as: iodine, silver nitrate, silver bromide, concentrated nitric acid…
Q: Why are some of the stoppers for wide-mouthed and narrow-mouthed bottles glass and some rubber?
A: The bottle stopper of the alkaline reagent needs to use rubber stopper, because the alkaline substance is easy to react with the material at the glass grinding mouth; Acidic or neutral materials require glass stoppers.
Q: How do I place the bottle cap when I take a drug from a reagent bottle?
A: after opening the cap of the reagent bottle, the cork should be “upside down” on the table to avoid contamination of the cap.
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Post time: Aug-26-2021
