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Hi there
my name is Bernd Aspacher (nickname Aschi). I try to understand Buehlmann theory
and I think I got everything but:

There is a formula to calculate the tolerance ambient pressure from the a and b
values:
Pamb,tol = (Pti.g.-a)*b
I understand how to use this for nitrogen (nitrox,air) and helium (heliox) but I
don't know how to handle both of them (trimix) because there has to be an input
from both gas components (with different a and b values). Do I have to calculate
both components seperate and take the maximium     or weight the Pamb,tol by the
fractures of the gases     or do I have to weight the a and b values   or
what???

If someone could tell me how to handle this or where I could find information on
this,
thank you, Aschi

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