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Chemicals used in industry, science and photography; chemicals used in analysis, in particular for the non-destructing testing of materials; matting sprays and anti-reflective agents for application to workpiece surfaces; contrast paints and developers for non-destructive materials testing; fluorescent powders and liquids for magnetic particle testing; coloured test media for analysis; leak indicator liquids; test media for forensic investigations; mordants for metals; heating oil additives in the form of chemicals; xray films, sensitized but not exposed; cleaning preparations for industrial purposes, in particular for metallic surfaces; mordants for metals. Solvent-based pigment paints; colorants, paints, metals in foil form, varnishes, lacquers, marking preparations and dyes, included in class 2; contrast enhancing preparations. Scientific measuring devices for determining the physical and electric properties of materials and workpieces; electric and electronic devices for material testing, included in class 9; magnetic powder testing devices for non-destructive materials testing; hand-held magnets; electric mobile and stationary crack detecting units; field strength meters; endoscopic equipment, microscopes and cameras for industrial purposes; light measuring apparatus; protective glasses [spectacles]; pressure measuring apparatus; x-ray testing devices; radiation-measuring instruments; ultrasonic testing apparatus; temperature gauges; test bodies for calibrating measuring devices; optical measuring and testing devices for testing materials and workpieces; magnetic powders. Hand-held lights, UV lights. Arranging and concluding of commercial transactions, for others, in relation to industrial preparations, namely chemicals, measuring devices and measuring equipment, and accessories and consumables therefor for determining the physical and electric properties of materials and workpieces.