Quote: (Originally Posted by
silent running)

Hello Jeff, thanks for posting the tests, good to see other manufacturers going to the trouble/expense of independent testing.
I think that a good starting point for an apples to apples comparision is to look at how much CO2 it absorbs before reaching say a .5% SEV or surface equivilant value, the threshold used in USN testing. Going by 1.6lpm for 157 minutes in the CK test, we get 251.2 lts of CO2 absorbtion before the 50 milibar threshold. Based on my frequently faulty math, I think 50 milibar is almost the same as .5% at 1 ata, right? -Andy
the one thing to note on the classic is that the duration is stated at 40m.. most of the other rigs tested state the max duration based on ~20m testing..