Pack of 100 Rimless boiling tube

Boiling tube is a cylindrical glass tube with a wider opening and a rounded bottom. It is designed to withstand higher temperatures and is commonly used for heating substances to their boiling point or conducting reactions that require intense heating. Boiling tubes are typically larger than regular test tubes and can hold a larger volume of liquid. They are often used in chemistry experiments for processes such as boiling, refluxing, or carrying out distillations.

大試管(或稱沸騰管)是一種開口較寬、底部呈圓形的圓柱形玻璃管。它的設計可以承受較高的溫度，通常用於將物質加熱到沸點或進行需要強烈加熱的反應。沸騰管通常比普通試管大，可以容納更大體積的液體。沸騰管常用於化學實驗中的沸騰、回流或蒸餾等過程。