supply of chlorine tablet of 78 mm diameter weight approx. 200 gms activemolecules of 3.5 di-choro-iso cyanuric acid effective chlorine of 50 chlorineformulated for sustained release (should last for at least 21 days in tap water.moiture content 4 and should be stabled during storege for at least one yearconfirming to rcf specification mdts 14274 rev- 01. brand: water treatment co. make:water treatment co. or similar.
