Dave.
Many years ago when I first started looking into post wave
cleanliness comparisons between CFC cleaning and No Clean I used
MIL-P-28809 as my standard. This Military Spec used to have the
acceptance limits for the Ionograph and the old Alpha Metals
Omegameter. The limits were.
Omega Meter 2.2ug NaCl/cm2 14ug NaCl/in2
Ionograph 3.1ug NaCl/cm2 20ug NaCl/in2
How this spec compares against your IPC spec I couldn't say.
Happy cleaning.
Steve Brown.
Psion Computers Ltd.
Greenford, Middx. UK.
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