Hi,



We are evaluating the cleaning ability of a new batch cleaner, which has the
ability to monitor the resistivity of the actual DI rinse water throughout
the rinse cycle.  I checked the archives as well as other sources and it
seems like the consensus ranges from 100K to 750K ohms with most suggesting
500K ohm as a good, acceptable resistivity level.  I am trying to establish
a basis for what is an acceptable final rinse resistivity level for the
boards we process.  We use RMA based flux.  We also have an incoming DI
rinse water resistivity meter for reference.



Would anyone be so kind as to point me in the right direction?  Thanks in
advance.



Joe




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