1.1 This specification covers refined ruthenium as sponge and powder in one grade as follows: 1.1.1 Grade 99.80—Ruthenium having a purity of 99.80 %. This specification covers refined ruthenium as sponge and powder in one grade as follows: Grade 99.80 and Grade 99.90. The material may be produced by any refining process that yields a product capable of meeting the chemical requirements of this speci