| The vast majority of LDS in this country use partial pressure mixing. There are only 2 or 3 places in the country that I'm aware of that have a membrane system. The same goes for continous blending which also removes the need for O2 cleaning.
The trouble is even if you have a LDS that has a membrane system whenever you go diving in a different area you will be back to partial pressure mixing and so will need O2 clean cylinders. |