DOW

[PIPETTES; ] REAGENT AND MEDICINE DROPPERS FOR LABORATORY USE; [SLIDE RULE CALCULATORS]; [CONSTANT TEMPERATURE HEATING BLOCKS FOR LABORATORY USE; CENTRIFUGES; PHOTOELECTRIC COLORIMETERS; APPARATUS USED IN PRESSURE TESTING OF METAL CONTAINERS AND PIPE LINES; ] INSTRUMENTS FOR TESTING SOLVENTS; [ELECTRO- PHOTOGRAPHIC PLATES FOR USE IN PHOTOGRAPHY AND PHOTOENGRAVING]