Surface cleanliness has been measured visually for the past 30 years using SSPC –VIS- 1 (ISO 8501-1) reference photographs. This method, while recognized as the industry standard, does have its disadvantages. It is deemed a subjective measurement rather than objective and is vulnerable to human error. This can be from experience level of the user to the condition of the visual reference chart itself; this often causes difficulties between operators, quality control and inspection personnel. There is also a great deal of external conditions that can affect the desired results wishing to be obtained, such as artificial light conditions and proximity of where the measurement is taking place.
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2020
Association for Materials Protection and Performance (AMPP)
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