Fellow technets,

We are in the process of selecting a new saponifier for our in-line cleaner
and developing the accept/reject criteria for the selection.  We mainly use
RMA fluxes on densely populated, double sided smt boards with various BGAs.
The typical visual and ionic contamination tests (using an Omegameter) will
be run using test boards, and we would consider other tests as required such
as having a lab perform a SIR test.  Some suppliers of saponifiers have
offered to run cleanliness test as part of the evaluation process.

Would anyone like to comment on:
*       What types of tests should be run to determine the cleanliness of a
populated board when evaluating different saponifiers?
*       What IPC spec defines the SIR requirements and methodology?  What
are the benefits of running a SIR type of test as far as cleanliness goes?

Look forward to your inputs.  thanks again

joe

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