Global Science Education
Portable and versatile jar suitable for various types of experiments under reduced air pressure state.
【Overall Advantages to Users】
Small chamber (jar) providing a restricted space under reduced air pressure state for various types of experiments including  sound volume change (propagating in the vacuum jar),  deformation of marshmallow or other foam made things, and  change of water boiling point.
【To all users】
*Not including any tubes and clips.
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