Preparation of Chlorine solution using Hypochlorite Solution Concentration of commercially available hypochlorite solution Required chlorine ConcentrationTo prepare 1000 ml Solution in ml Add water in ml 5% 2 400 600 1 200 800 0.50% 100 900 10% 0.50% 50 950 1 100 900 2 200 800 Preparation of Chlorine Solution using Bleaching powder Solution PREPARATION OF DILUTE SOLUTIONS OF BLEACHING POWDER Strength of SBP (Strength of beaching powder) Volume of water Desired concentration Bleaching powder in grams per litre 20% 1 litre 0.50% 25 1% 50 2% 200 5% 250 10% 500 25% 1 litre 0.50% 25 1% 40 2% 80 5% 200 10 400 30% 1 litre 0.50% 17 1% 33 2% 67 5% 167 10 333 Note: Bleach solution becomes unstable rapidly, hence it needs to be freshly prepared daily or changed on becoming dirty/turbid. Chlorine bleach can be corrosive. Protect metal instruments by thoroughly rinsing them with water after soaking for 10 minutes. Source: Swachhta Abhiyaan Guidelines for Public Health Facilities