Q: I work for a medical device company where we make machined parts. I’m interested in finding a supplemental visual inspection tool that will aid in inspecting the surface of a part after being cleaned. Perhaps additional fluorescent light or a different tool that can support in detecting visual surface contaminants on medical device components?
A: Visual inspection is a critical component of ensuring your parts are properly cleaned. Recently, we have observed its increased usage as a qualified/validated residue detection method. This is often due to Allowable Daily Exposure (ADE) limits being set for detergents, thereby allowing the utilization of more non-specific detection techniques (including visual inspection).
We would recommend getting an LED flexible goose neck inspection flashlight that you hold at a low angle, close to parallel to the surface being inspected against a dark or poorly lit background. Any surface residues will reflect back brightly against the darker background. This is a very effective way of detecting particles and films. You can get inspection lights from industrial suppliers (many of whom also sell our detergents).
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