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Author: Charlie Cooke
Photo size: 2.4 Mpixels (6.99 MB uncompressed) - 1549x1578 pixels (5.2x5.3 in / 13.1x13.4 cm at 300 ppi)
Photo keywords: 0 seconds, chemical tests, cobalt isothiocyanate, cutting agent, Sam Drake, starch powder, University of Derby
Published in: Chemical tests