I've read about this some, aside from ordering, is there any info documenting what a user might expect when using this? Has the pph offered their ratings etc? I know they tell what you "should" expect and how it works, but what you feel? If i feel suffocated I will panick
EDIT**. Cut and pasting from web. I just needed to search. It does seem to good to be true.. as i get close to passing out tho, and SI kicks in, will i remove it?
HOW IT WORKS
When we breathe normal "air," 80% consists of nitrogen and approximately 20% consists of oxygen. If the percentage of nitrogen were to increase for any reason, our brains would receive less oxygen and we would reach a point where the effects of this deficit, known as hypoxia, would become apparent. We would become light-headed, for example, and we would eventually lose consciousness if the oxygen concentration were to drop below 12%.
If the percentage of oxygen were to continue to fall below 7%, we would not be receiving enough oxygen to maintain the cellular functions of the brain and we would die. And in the absence of carbon dioxide, our bodies would not send us an obvious signal of danger – we would not feel short of breath, for example. We would not feel panic or any concern at all. In fact, hypoxia is often accompanied by a feeling of euphoria. It is a condition well-known to pilots who are warned against its silent dangers.
The R2D Rebreather creates a hypoxic environment by recirculating the air within the unit. The limited supply of oxygen is processed and consumed as it is converted into CO2 by the user's respiratory system. That CO2 is passed through two canisters filled with soda lime granules that absorb it so that CO2 is not re-circulated. Thus, each time the user inhales and exhales, the concentration of oxygen declines and the percentage of nitrogen increases. Depending on the respiration rate, hypoxia will lead to unconsciousness within 2-3 minutes. Death will inevitably follow as the oxygen concentration continues to fall to an unsustainable level.
This very simple approach to producing hypoxia is scientifically based and proven. It requires no outside assistance;