Spent the last 3 nights a loaner machine to record my first set of #'s with the F&P 432.
First my 431 #'s over two nights(16 hrs)
Leak .52 l/sec
AI .4
HI 5.6
With the 432 three night (25hrs)
Leak .3
AI .8
HI 8.3
Very pleased with the leak #s as this is what I was chasing when I got this mask.The HI's have me a little puzzled!I think I will bump up my pressure by .5 and see if I can feel any benefit(back to my own M series plus with no monitoring)