... alkaline solution Zinc Oxide 99%,99.5%,99.7% 1.Zinc Oxide Grades : Indirect process Zinc Oxide, Direct Process Zinc Oxide, Calcined Zinc Oxide, Feed Grade Zinc Oxide, Pharmaceutic Zinc Oxide, nanometer Zinc Oxide, etc. ... Zinc Oxide 99.5% Zinc Oxide 99.7% centent ZnO 99% 99.5% 99.7% MnO ≤ 0.001% >0.0005% 0.0004% PbO ≤ 0.15 ... 0.1% 0.1% 0.1% 45um Sieve Residue ≤ 0.15% 0.15% 0.15% zinc oxide 99% at least