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Author: Charlie Cooke
Photo size: 3.0 Mpixels (8.57 MB uncompressed) - 1720x1741 pixels (5.7x5.8 in / 14.6x14.7 cm at 300 ppi)
Photo keywords: 30 seconds, chemical tests, cobalt isothiocyanate, phenobarbital, Sam Drake, University of Derby
Published in: Chemical tests