... Trichloroisocyanuric Acid 1)TCCA, 90% available chlorine 2)swimming pool chemicals, 3)slow dissolving stablized chlorineTrichloroisocyanuric acid (TCCA) 90% tablet1) Slow ... , 500gPacking: 0.5 / 1 / 5 / 10 / 25 / 50kg drum pool chemicals tcca 200g tablet