Boiling tube意思

"Boiling tube" is a term often used in the context of laboratory equipment. It refers to a long, cylindrical glass tube used for heating liquids, especially for boiling or evaporating purposes. The boiling tube is typically made of borosilicate glass, which can withstand high temperatures and is resistant to thermal shock.

In a laboratory setting, a boiling tube is used for a variety of chemical reactions and experiments that involve heating liquids. It is usually placed in a clamp stand or a ring stand and heated using a Bunsen burner or an electric heater. The long shape of the tube allows for the uniform heating of the liquid, and the open top allows for easy addition of reactants or removal of vapors.

Boiling tubes come in various sizes, typically ranging from 50 milliliters (mL) to several hundred milliliters in volume. They are often graduated, meaning they have markings on the side to indicate the volume of the liquid inside, which is useful for quantitative experiments.

It's important to handle boiling tubes with care due to the risk of burns from hot glass and the potential for splashing of hot liquids. Proper safety equipment, such as gloves and safety goggles, should be worn when using boiling tubes. Additionally, the tube should be heated evenly to prevent it from breaking, and it should be allowed to cool down before touching it to avoid burns.