Glass Gas Sampling Tube Portable Absorber Bottle Experiment Tool Sturdy Apparatus for Gas Collecting Science Chemi Labware Metal Structure: This gas sampling tube is made of high borosilicate glass, stable and sturdy structure, and ensures a long time to use Experimental Teaching Equipment: The glass gas sampling tube is a practical instrument for chemi teaching experiment demonstrations Compact Dimensions: Gas Collecting Bottle size is 2 cm x 2 cm x 8.5 cm/0.79 inch x 0.79 inch x 3.35 inch, lightweight and portable, easy to carry and use Package Included: Each package comes 1x Glass Gas Sampling Tube, which is great for use in this lab or for chemical experiments at home or school Stable Construction: Designed with a sturdy structure that resists deformation, this Absorber Bottle, smooth surface, is a great scientific experiment tool Specification: Material: High Borosilicate Glass Size Chart: 2 cm x 2 cm x 8.5 cm/0.79 inch x 0.79 inch x 3.35 inch Package Includes: 1xGlass Gas Sampling Tube Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.