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From cutting and one-step correction to final finishing.
Orientation determines which surface receives the intended exposure. An unidentified face or mounting direction can make follow-up observations ambiguous.
Updated · NANOLAB Knowledge
Mark specimens outside the evaluated area and record mounting position. Preserve the relationship between sample identity, exposed face and photographs.
A transparent sample photographed from the reverse side may appear different from the original inspection without a material change.
Do not infer orientation later from the most visually damaged area. Establish and preserve it before exposure starts.
Method reference: Q-Lab: introduction to weathering. References describe their stated methods or products; they do not certify NANOLAB products or establish compatibility with an unlisted surface.
Ask NANOLAB about the exact product and intended use. Use the current product documentation for formulation-specific instructions.