CHEMICALS FOR LABORATORY USENAMELY, COPPER SULPHATE STANDARD SOLUTIONS, CORTISONE STANDARD SOLUTIONS, SYNTHETIC RESINS, OILS AND OIL EMULSIONS, SODIUM AND POTASSIUM FLAME STANDARDS, STARCH POWDERS AND REAGENTS, TURBIDITY STANDARDS, TRAGACANTH GUM, AND METAL AND NON-METAL SALTS IN SOLUTIONS AND IN DRY FORM