Examination & Analysis

Before proposing a treatment, conservators closely examine and analyze an object to inform treatment decisions. For Portrait of a Man, the loan agreement stipulates that any analysis be limited to techniques that are completely non-invasive. This means that no samples could be taken for microscopic examination or chemical analysis. Instead, the following imaging techniques were used to study the painting:

Ultraviolet fluorescence
Infrared reflectography

Next: Ultraviolet fluorescence
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