Composition of Nova-T :: (A) Copper and silver, (B) Copper only, (C) Copper and selenium, (D) Copper and molybdenum
Answer is A. NOVA-T can be distinguished by a silver core over which the copper wire is wrapped. It has silver added to copper wire increasing it's life span to 5 yrs. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 23rd EDITION PAGE NO 496 Shaw's textbook of Gynecology - 17 th edition, page no. 258.