Pharmaceutical Drug Residue

Pharmaceutical-residue-contamination, it arises from sticky organic layers in drug production environments. This contamination forms unique patterns, such as bio-adhesive films on metal tools and crystalline deposits on glass vials, thus varies by substrate material. On plastics, residue spreads thinly and embeds deeply, while on stainless steel, it clings in irregular clusters. Removal challenges emerge from thermal sensitivity; laser cleaning applies energy, yet residue resists vaporization due to volatile components. After treatment, surface still shows traces in shadowed areas, so multiple passes become necessary. Material behaviors differ—metals conduct heat quickly and yield clean results, but polymers degrade easily and retain haze. Process demands precise pulse control, and thus enhances efficiency for sensitive substrates. Yi-Chun Lin, Ph.D., Taiwan