Why is it called Cu T 200: (A) 200 sqmm of Cu over loop, (B) 200 mm of Cu over loop, (C) For 200 days, Cu concentration does not changes, (D) 200 sqcm of Cu over loop
Answer is A. In Cu T 200, the number included in the name of the device refer to the surface area in sq.mm of the copper on the device Reference : Park&;s textbook of preventive and social medicine,23rd edition, Page no: 496