ASTM B 616 - 96 (Reapproved 2006) Standard Specification for Refined Rhodium

American Society for Testing and Materials (ASTM). Current edition approved June 1, 2006. Published June 2006. Originally approved in 1977. Last previous edition approved in 2000 as B 616 – 96 (2000). 2 p. This specification covers refined rhodium as sponge and powder in three grades as follows:
1 Grade 99.80—Rhodium having a purity of 99.80 %,
2 Grade 99.90—Rhodium having a purity of 99.90 %, and
3 Grade 99.95—Rhodium having a purity of 99.95 %.
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 E 29.