What low tech and easy to perform detection methods can be used to measure cleanliness at 0.01 grams per square centimeter?
Visual inspection is best used to detect residues of contrasting color or texture. Good lighting can enhance visual inspection. Magnification and fiber optic lighting, which throws light across a surface, improve detection.
Low-power microscope inspection is a quick and efficient way to verify cleanliness of residual oils and greases, flux residues, particles and surfaces.
Wiping with a white wipe provides a contrasting surface with which to detect dark residues (the white glove test).
For more information on how to measure cleanliness, request a free copy of The Aqueous Cleaning Handbook. Entire chapter dedicated to Measuring Cleanliness! To get your FREE copy, simply email request to firstname.lastname@example.org.