Precision Optics: Cleaning Without Moving the Coating
Most coating damage is not caused by the solvent. It is caused by drag, by a dry fibre and by a wipe that was used one pass too many.
Swab or Rinse: Choosing a Recovery Method
Both methods measure residue. They disagree because they sample different surfaces, different areas and different chemistry, and the choice…
How to Write a Wiper Specification Suppliers Can Quote Against
Most wiper specifications describe a product. A good one describes a test, a tolerance and an acceptance rule, so two suppliers quote the…
Why Wiper Residue Appears Weeks After the Clean
A haze on a lens or a failed adhesion test rarely comes from the last clean. It comes from a film that was left behind, and it took time to…