Grade: Ta2O5 purity 99%, 99.5%, 99.9%, 99.95%, 99.99%, 99.995%, 99.998% Appearance: white or yellowish powder Applications: Fo Grade: Ta2O5 purity 99%, 99.5%, 99.9%, 99.95%, 99.99%, 99.995%, 99.998%Appearance: white or yellowish powder for purity 99%, 99.5%, 99.9% and white powderfor 99.95%, 99.99%, 99.995%, 99.998%Applications: For making optical glass, monocrystals, etcNote: Special ...