Quote: (Originally Posted by saturation)
PN2 provides some protection against 02 convulsions. When this is replaced by He, the risk for oxtox increases. The risk in increasing order is ~ air > nitrox > trimix > heliox.
Didn't know that. I assumed adding He is good because it's more easy to breath (better ventilation, less chance for CO2 buildup).
Any references to studies or experiments which indicate the positive pN2 impact on oxtox ?
Many Thanks
Peter