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I have seen several references to "O2 spikes" and Nitrox (a situation 
were a diver breaths a fraction of O2 greater than the sum of a given 
mix). Is this a real concern with Nitrox? I got my TDI Nitrox 
certification this year and have used Nitrox on about 50 dives since. 
I ALWAYS analyize my mix before EVERY dive, but if O2 does "seperate", 
the odds of an "O2 spike" are very real! 

I recently went into the local dive shop where I get my Nitrox fills and 
they were rolling tanks back-and-forth across the floor, "mixing the gas" 
after a fill. This concerned me because I get my tanks filled with 
EAN 32 & 36 and may not actually dive the tanks for 1 or 2 weeks. Will 
the gases "seperate"? Should I physically "mix" the gas (roll the tank 
around) before each dive? Will O2 stay in gasious solution?

Thanks in Advance
Harry Jones
haj@te*.ed*
Padi DM-91974
 

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