This is the guideline document. It tells you how to achieve those results through chemistry and equipment.
It explains how different flux types (water-soluble, rosin-based, no-clean) interact with cleaning chemistries and board finishes. ipc-ch-65 pdf
Contaminants like flux activators, plating chemicals, and fingerprint oils can lead to electrochemical migration, corrosion, and leakage currents. While many manufacturers use "no-clean" fluxes, IPC-CH-65 clarifies that even these can leave problematic residues, especially with high-heat lead-free reflow processes that change the character of the remaining residue. This is the guideline document
The handbook acts as a "roadmap" for both traditional and emerging cleaning issues. helping manufacturers move toward greener chemistries.
The standard includes cross-references to modern environmental regulations, helping manufacturers move toward greener chemistries.