How to Check Solder Paste Compatibility
Often times, aperture blockages are caused by incompatiblity with under wipe solvents. Solvents containing IPA or other alcohols can react with the solder paste and cause it to congeal. Lead-free solder paste fluxes in particular use complex chemistries that may not be fully soluble in IPA.
- Extrude solder paste into glass beaker or sample jar containing the solvent
- Inspect for solubility or coagulation

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