Porous substrate
A surface (paper, uncoated cardboard, raw wood) that absorbs the aqueous component of latent print residue into its matrix, making powder development ineffective and requiring chemical amino-acid-reactive methods.
A surface (paper, uncoated cardboard, raw wood) that absorbs the aqueous component of latent print residue into its matrix, making powder development ineffective and requiring chemical amino-acid-reactive methods.
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