9 a Wide Range of Scientific and Test Laboratory Apparatus and Supplies-Namely, Timers, Baths, Temperature Regulated Circulators, Electrode Arms, Test Laboratory Heat Blocks and Hot Plates, Incubators, Jacks, Mixers, Ovens, pH Meters, Stirrers, Glass Components and Laboratory Glassware, Laboratory Plasticware, Microscope Slides, Laboratory Supplies, ThermometeRS [ ; AND WIDE RANGE OF GRAPHIC ARTS AND PHOTOGRAPHIC ARTS EQUIPMENT AND SUPPLIES-NAMELY, CAMERAS, CASSETTES FOR PHOTOTYPESETTING, CONTROLLERS FOR WATER TEMPERATURE, REVOLVING DARKROOM DOORS, VACCUM CONTACT FRAMES, PRINTERS, PROCESSORS FOR PHOTOGRAPHIC FILM AND PAPER, LIGHT TABLES, CHEMICAL STORAGE TANKS, DEVELOPING TRAYS, DUST CHASERS, FILTERS AND FILTER CARTRIDGES FOR CHEMICAL AND WATER FILTRATION, MASKING SHEETS, SENSITIVITY GUIDES FOR PLATE CAMERAS, AND THERMOMETERS ]