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a surge in popularity as as an end-of-life method. In countries such as the US, Canada, Australia, New Zealand the UK, Helium is marketed in disposable cylinders. These are known as ‘Balloon Time’ kits and are used to fill balloons with helium so that they float up to the ceiling for birthday parties and so on (Fig 5.5 shows the two available sizes, 250 litre, and 420 litre).
The Optimal Gas Flow Rate
A peaceful hypoxic death with an inert gas and an Exit Bag, depends upon an optimal gas flow. The optimal flow will be sufficient to flush away exhaled carbon dioxide so that the gas does not accumulate within the bag. An optimal gas flow will also prevent the bag from becoming uncomfortable, yet is slow enough so that the flow continues for > 20 minutes.
To determine the optimal flow, Exit has carried out experiments where different flow rates of air were admitted to a bag over a