Chlorine tablets for use in ir-drdo bio-toilets confirming to rcf specification mdts-14274 rev-00. technical requirements: 1. the tablet size should be 78 mm diameter and weight should be of approximately 200 g. 2. the tablet should have active molecule of 3, 5 di-chloro-isocyanuric-acid. 3. it should have effective chlorine of >= 50 percent chlorine. 4. the tablet should have formulated for sustained release (should last for at least 21 days in tap water). 5. moisture content should be