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The Peaceful Pill Handbook Testing a Disposable Helium Cylinder
1. Obtain an accurate oxygen sensor from the Exit Interna- tional store (see Fig 5.8)
2. Calibrate the sensor by setting the gauge to 21% in air 3. Attach the flow regulator jet to the gas cylinder and con- nect the hose to run the 15 litres of gas for testing into the filtered input of the gauge. (See Fig 5.7).
4. Let the gas flow until a steady reading is obtained on the most sensitive gauge setting.
The reading should be < 2% (ie. <10% of the oxygen present in room air) if the gas is to be used.
At the conclusion of the test, record the cylinder pressure to ensure that there is still an adequate supply left for a hypoxic death.
NOTE: The issue of oxygen contamination does not affect Max Dog Brewing Nitrogen cylinders.
Fig 5.9: Flow Rate, Pressure and Volume of Helium with Time for 420 & 250 litre Cylinders using the Exit Gas Control Jet Assembly