18 Pack Glass Test Tubes With Cork Stoppers 25x120mm Flat Bottom Borosilicate Lab Grade Heat Resistant Science Tubes For Experiments And Home Lab Use 45ml Capacity
✔️ 25x120mm, 45ml capacity, flat bottom, borosilicate glass
These 18-pack glass test tubes are made from borosilicate glass for heat resistance and reliability. They come with cork stoppers and a flat bottom, making them handy for experiments, sample storage, and hobby science at home or in class.
✅ 18-pack set of flat-bottom glass test tubes with cork stoppers
✅ Outer diameter 25 mm; inner diameter 21 mm; length 120 mm
✅ Volume 45 ml per tube; borosilicate glass for heat resistance
✅ Reusable after cleaning; cork stopper provides a seal and rotate to tighten
✅ Wrapped in thick sponge for safe packaging
💡 What is a glass test tube with cork stopper used for in experiments and home labs? These handy glass tubes help users store and observe small samples in controlled conditions. - storing liquids and powders in small volumes - cork stopper provides a seal and can be rotated to tighten - borosilicate glass resists heat for light heating tasks - flat bottom keeps tubes stable on benches
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