1.1 This specification covers refined rhodium as sponge and powder in three grades as follows:

1.1.1 Grade 99.80- Rhodium having a purity of 99.80%,

1.1.2 Grade 99.90- Rhodium having a purity of 99.90%, and

1.1.3 Grade 99.95 -Rhodium having a purity of 99.95%.

1.1.4 For the purposes of determining conformance with this specification, an observed value obtained from analysis shall be rounded to the nearest unit in the last right-hand place of figures used in expressing the limiting value, in accordance with the rounding method of Practice E29.