Vacuum Container VL-2 “Air-fresh”


[Product Description]

All-in-one simple vacuum vessel made of lightweight and pressure-resistant reinforced plastics that enables easier and safer handling for student lab compared with a conventional glass bell jar.

[Overall Advantages to Users]

  • It is easy to create a reduced pressure state in the container by drawing out the inner air using the manually operable pump, which is included in the product.
  • The lid and pump have a built-in intake/exhaust valve seat mechanism. Therefore, all a user needs to do is to directly connect the pump to the center of the lid, where the intake/exhaust valve seat, while continuously moving the piston up and down until a proper degree of vacuum is created inside the container.
  • With this vacuum container, it is easy to carry out various types of vacuum experiments such as “transmission of sound”, “boiling point dropping” and “inflating/deflating a marshmallow”, because of the spacious capacity of the container (1800 ml) that can hold relatively large experimental materials like a beaker, while maintaining an airtight seal between the lid and container.


  • Vacuum
  • Reduces pressure state
  • Atmosphere
  • Atmospheric pressure
  • Property of air
  • Property of sound
  • Presence/absence of air in a container
  • Comparison between propagation of sound under atmospheric pressure and that under reduced pressure



Related Products


[To all users]

  • A mechanical or motorized pump is not needed as the pump is built into the vacuum container lid. 

[To teachers]

  • Hassle-free all-in-one vacuum vessel with so many possibilities for teacher demonstration because they can easily prepare for their heuristically preliminary experiments on the relevant topics.

[To students]

  • The transparent body of the container allows a student to observe how an object inside changes as they evacuate the air.
  • Size of the container: φ160 x 144 mm
  • Capacity of the container: 1800 ml
  • Reachable degree of vacuum: Up to 75% of the air inside the container can be discharged.
  • Material: Jar: PC (Polycarbonate)
    • Lid: Heat resistant Styrene
    • Pump (Cylinder & Piston): ABS resin

Teacher's Resources

  • [ Promotional Material ] Product Insight


  • [MANUAL] (March 2023)


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