Figure 2From: Evaluation of bleach-sedimentation for sterilising and concentrating Mycobacterium tuberculosis in sputum specimens Bleach sterilization. M. tuberculosis viability after treatment of sputum specimens with 4 different bleach concentrations for 4 different exposure times, i.e. a total of 16 combinations of bleach concentrations and exposure times. All control specimens were culture-positive.Back to article page