Glass Test Tubes Laboratory Essentials For Experiments

Glass test tubes are narrow cylindrical laboratory tubes with a rounded bottom and open top, primarily used to hold, mix, heat, and observe small quantities of liquids or solids. They are among the most fundamental laboratory glassware, found in schools, research facilities, medical labs, and industrial settings. They are usually made from borosilicate glass (e.g., Pyrex) due to its thermal resistance and chemical durability, allowing safe heating and use with various reagents.