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Check the pressure of the oxygen (ChemLabchem lab), helium and argon bottles (Tween Pallet Stores). Ensure the bottles are above 200 psi; otherwise, swap them out with fresh bottles. When a Pallet Stores bottle array is empty, tear the yellow tags to EMPTY, disconnect the manifold and connect it to full bottles (see how to do this). It is good practice to always have a full gas bottle array ready to go.
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