... power , granule , falke , concentrate 8% 10% , 20% . chlorine dioxidehot sale chlorine dioxide(8%10%20%)Background of developmentChlorine dioxide (ClO2), which has ... N, N-diethyl-p-phenylene -diamine (DPD) to produce a kind of pink compound. 20% chlorine in chlorine dioxide converts into chlorite ... ClO2 (I), Cap and shake to mix .3. Add one DPD NO.3 tablet immediately, Cap it and compare the color ...