The ETV program issued about ...
Published by C. Bruce Bartley, President and Senior Technical Officer
The ETV program issued about 10 field reports on performance of membranes. The data is in the reports for calculation of recovery and ratios you are looking for. Here is the web site to access these free reports: http://archive.epa.gov/nrmrl/archive-etv/web/html/vt-dws.html#artfilt
I hope this helps.
Best,
Bruce