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Grab mark impressions on pillowcase

We recently received an enquiry regarding the effectiveness of the VMD process in developing grab marks on a pillow case to help identify if someone had been smothered.

We decided to test the VMD process on a 100% cotton, old (used) white pillowcase that had been used to simulate “smothering”  someone. The pillowcase was then  processed in a large VMD system with gold and zinc.

The results were somewhat unexpected!