This thick-walled Bomex glass boiling flask is perfect for vigorous heating of liquids in the classroom setting. It can hold up to 100ml of liquid. The bottom is flat, and the flask features a tooled lip. Stopper size for the flask is No. 3. Excellent for chemical experiments and lab exercises in the classroom setting, or for demonstration purposes for a science fair project.
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The Hoberman Sphere expands and contracts with a magical motion so fluid and simple that kids can't help but play with it for hours.
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