Well Leo:
        Here is what we do. We have just purchased an Ionogragh which is 
     similar to an Omega Meter. Our process is setup to test a fab from 
     each water cleaning source (we currently have 2 SMT wash machines and 
     1 wave solder wash machine) every 4 hours. This will insure that if 
     any problems were to occur on any cleaning source we would know it 
     right away. We are using a closed loop recirculating Ionic removal 
     system to clean our water and all processes use water soluble 
     chemistries.
     
     Hope this helps ya.
     
     ERic Bernal Process Eng..


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Subject: Cleanliness testing with Omegameter as a contract manufactur
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Date:    10/21/95 11:03 AM


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Subject: Cleanliness testing with Omegameter as a contract manufacturer 
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Technet
     
Our engineers are reviewing and updating process specs for our wave 
solder and cleaning operations.  We are a contract manufacturer doing 
primarily industrial and instrumentation products in a very wide variety 
of shapes, sizes and mix of SMT, PTH and some FPT as well as a great 
variety of mechanical parts including toroids, brackets, connectors etc. 
Volumes also vary greatly from prototype quantities to continous 
production.  Our main area of focus is our dual wave soldering area with 
aqueous cleaning.
     
We are primarily interested in developing the best process controls for 
measuring, recording and controling both wave solder and especially 
cleaning documentation that will satisfy us, ISO and our customers.
     
Our main question is, "With the variety we deal with, how often would we 
need to do Omegameter testing to feel assured our process is in control?"
     
Thank you in advance for your thoughts.
     
Best Regards,
     
Leo Reynolds