Pressurised gases

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  • Use only the designated cart.
  • The protecting cap must be mounted during transport.
  • Never roll or drag a gas bottle on the floor.

In the laboratory

  • Remember that some gases react violently with certain materials.
  • Standing gas cylinders should be safeguarded from tipping with at least a fire-proof chain.
  • No part of the gas cylinder must be exposed to temperatures above 40 C for liquids and 60 C for pressurized gases.
  • The pressure reducing valves should not be left on the bottle, except if used very often.

Valves and fittings

  • Use the correct valve for the gas you're employing (especially for oxygen).
  • Left-hand thread for combustible gases
  • Right-hand thread for incombustible gases


  • If stored over longer periods of time, pressurised gas cylinders should only be kept in well ventilated, dry and sufficiently fire-proof rooms.
  • A laboratory is not suited for the storage of gas cylinders.
  • Non-flammable fixtures must be in place to prevent tipping of the cylinders.
  • Full and empty bottles should be stored separately. The empty bottles should be marked clearly.

Warning sign

Gas bottle

Gas bottle


Isabelle Altorfer

Isabelle Altorfer

ETH Zurich

Labor Support Gruppe

Isabelle Altorfer

HPV F 57

Robert-Gnehm-Weg 15

8093 Zürich


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Sat Jul 22 21:12:51 CEST 2017
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