Science teachers and lab enthusiasts, this glass gas sampling tube is exactly what you need for chemistry experiments and demonstrations. Made from high borosilicate glass, this thing is built to last through multiple uses without losing its structural integrity. The dimensions are compact at 2cm x 2cm x 8.5cm (about 0.79 x 0.79 x 3.35 inches), making it easy to handle and store when not in use. The sturdy metal structure and smooth surface make cleaning between experiments a breeze, and the stable construction means it won't easily deform or break during normal lab use. Whether you're demonstrating gas collection techniques in a classroom setting, conducting home chemistry experiments, or need reliable equipment for your lab, this sampling tube delivers consistent performance. The high borosilicate glass is resistant to thermal shock, so you can use it with various temperatures without worrying about cracking. It's perfect for collecting and measuring gases in educational settings, research environments, or even for hobbyists who enjoy hands-on science projects. The package includes one glass gas sampling tube, ready to use right out of the box. Much more durable than cheaper glass alternatives, and the precise dimensions ensure accurate measurements for your experiments. Definitely a must-have piece of equipment for anyone serious about chemistry education or experimentation - it's that perfect balance of quality construction and practical functionality that makes lab work so much more effective and enjoyable.