Why is glass test tube used?

Glass tubes are narrow cylindrical containers used for measuring volume, storage, and many more applications. Glass tubes are generally more accurate than beakers, with error as minimal as one percent of the actual volume while measuring.

Glass test tube, also known as culture tube and sample tube, is a common and widely used glassware, which has a finger-like length, open top and closed bottom. It can be made of soda-lime material, borosilicate glass or quartz glass. And borosilicate glass and quartz glass test tube can withstand high temperatures up to several hundred celsuis.

To suit different applications, the glass test tube can be made into multiple lengths and outer diameter.

Glass test tube is commonly supplied in round bottom and some are flat bottom. Besides, the stopper can be plastic, cork, quartz stopper and plastic screw cap.