1. What is a glass spotting capillary?
Glass spotting capillary is a glassy thin tube, generally cylindrical or micro-tapered. It is characterized by being relatively slender, with a diameter often below the millimeter level, and a length that can be as long as tens of centimeters. The tube wall is thin and is often used for operations such as liquid distribution, mixing, transfer and sampling.

2. The use of glass spotting capillary tubes
1. Liquid distribution: In the laboratory, liquid needs to be distributed quantitatively. Glass spotting capillary can accurately control the amount of liquid distributed and realize the distribution of small amounts of liquid.

2. Liquid mixing: The glass spotting capillary tube can be used to mix two liquids, and the two liquids can be mixed evenly by repeatedly sucking and discharging them through the tube.

3. Liquid transfer: In laboratory operations, it is sometimes necessary to transfer a liquid from one container to another. Glass spotting capillary tubes can easily achieve liquid transfer.

4. Liquid sampling: Liquid sampling is required in the laboratory, and sometimes precise quantitative sampling is required. Glass sampling capillaries can be used to accurately take out the required liquid.

3. Application scenarios of glass spotting capillary tubes in laboratories
1. Chemical experiments: In chemical experiments, solutions sometimes need to be separated, extracted or concentrated, and operations need to be performed under precise quantitative liquid conditions. Glass spotting capillaries can meet this need.

2. Biological experiments: In biological experiments, samples need to be separated, extracted, measured and other operations. Glass spotting capillaries can be used to accurately operate samples.

3. Medical testing: In medical testing, certain liquids need to be sampled or distributed accurately, and glass spotting capillaries can meet this demand.

4. Conclusion
Glass spotting capillary is one of the commonly used tools in the laboratory and plays an important role in operations such as distribution, mixing, transfer and sampling. In the laboratory, the rational use of glass spotting capillaries can improve the precision of experimental operations and reduce the waste of reagents.