There's tons of information for 4040 and larger membranes regarding their use for sap, but I can't find much for the smaller 'home' (cartridge) style membranes.
Most membrane manufacturers have a data sheet with there membranes with properties such as:

Min salt rejection %
Stabilized Salt rejection %
max feed silt density index
free chlorine tolerance
max feed water turbidity (in NTU)
PH Range (continuous op, or short term cleaning)
max salinity


Which of these properties is relevant, and are there known limits to any of them that will help determine performance? Is there a chance that a membrane will fail even if it does look good on paper? Any scientific method to picking a membrane?