Preferential removal of soluble glass constituents into a contacting liquid, leaving the near-surface composition different from the original glass.
GlassRenu · Educational illustration
Meaning and boundaries
Leaching is not the same as water carrying contaminants from concrete or metal onto glass. The direction of material movement must be stated.
Why it matters in glass restoration
Leaching can produce a depleted surface layer, alter wetting and optical properties, and contribute to haze, iridescence, or progressive corrosion.
Related terms
References
- National Glass Association — Assessing the Durability of Decorative Glass
Publisher’s original source - Canadian Conservation Institute — Care of Ceramics and Glass
Publisher’s original source - Canadian Conservation Institute — Caring for ceramic and glass objects
Publisher’s original source - International Organization for Standardization — ISO 719:2020 — Hydrolytic resistance of glass grains at 98 °C
Publisher’s original source