Cleaning Diagnostics
Building an effective cleaning process requires to test and measure. Electronic assembly cleaning technology is a complex process. Several factors must be managed in order to get acceptable results for ionic, organic and particle cleanliness.

1. Feasibility study
- Design PCBA for cleaning
- Residue characterization
- Matching cleaning agent to residue
- Material compatibility
- Cleaning machine check (machine capability)
- Rinse water quality
- Waste water disposal (limits for sewage)
2. Cleaning trials – on test boards
- Building equivalent samples (test boards)
- Optical evaluation of cleaning residues
- Surface insulation test (SIR)
- Ion chromatography
- Other test methods (surface tension)
3. Cleaning trials for product Qualification
- Optical evaluation
- Harsh environment simulation (moisture, condensation)
- Functional tests in real application
4. Qualified process stability monitoring
5. Process changes verification
- Process changes validation (see IPC J- STD 001H chapter 8)