Package: 48pcs 25x140mm glass test tubes, wrapped by foam boxes with high quality cork stoppers.
Size: The glass test tube is 140 mm (5.5 in) long, 25 mm (1 in) in diameter, and has a volume of 45 ml.
Material: glass test tube is made of borosilicate glass, heat resistant.
Features: The cork stopper has a good seal and the test tube can be used repeatedly after cleaning.
Use: It can be used to store bath salts, hot chocolate, can store liquids, breed plants, and transparent test tubes are suitable for various scientific comparison tests.