This content requires Adobe Flash Player version
Either you do not have Adobe Flash Player installed,
or your version is too old,
or there is a problem with your Flash installation and we were unable to detect it.
test subject’s head. The level of carbon dioxide within the bag was monitored using an RKI sampling gas detector.
The results for an 80 Kg male taken over a 5 minute period for two gas flow rates (5 & 15 l/min) are shown in Fig 5.2
For 15 l/min gas flow the level of carbon dioxide in the bag does not rise appreciably over the 5 minute period. With the low flow rate, the level of carbon dioxide approached 5%. This was enough to make the subject uncomfortable and alarmed. A flow rate of ~15 l/min was seen as optimal.
For Max Dog Nitrogen cylinders, the click-flow regulator can be set to 15 litres/ min. The gas will flow at this rate until the cylinder’s contents are exhausted ( ~400/15 or ~25 minutes, more than enough for a reliable and peaceful death).
For Balloon Time (or other similarly branded) cylinders which do not ship with suitable flow control regulators, it is difficult to control the flow of gas. The nylon tap provided with the cylinder is designed to fill party balloons. The tap is not designed to allow a more subtle gas flow rate. For use with an Exit bag, Exit recommends that the nylon fitting be discarded and replaced with a custom brass jet flow fitting available at: http://bit.ly/1ILmCMM
Using the Exit flow control kit on a standard 420 litre helium cylinder gives a useful operating time of ~20 minutes.