Sodium hypochlorite is extensively used as a disinfectant in the health care industry for more than 150 years. There are lots of misconceptions are there even to this day regarding the dilution and time of exposure required for its disinfection action. National guideline on Biomedical waste published by the Ministry of Government of India in its recommendations on Biomedical Waste (BMW) rule of 2016 had suggested the use of 10 % Sodium hypochlorite which was later corrected as typographical error and changed to 1 % which is now followed in the BMW Rule – 2018. | Study of the effectiveness of 1 sodium hypochlorite on blood samples discarded in a clinical laboratoryStudy of the effectiveness of 1 sodium hypochlorite on blood samples discarded in a clinical laboratory