Tapan Kumar Das1, Samir Kumar Laha2, Debabrata Basu3. 1. Central Sterile Services Department, Apollo Gleneagles Hospital, Kolkata, West Bengal, India. 2. Central Sterile Services Department, Peerless Hospital, Kolkata, West Bengal, India. 3. Central Sterile Services Department, Tata Medical Center, Kolkata, West Bengal, India.