| ASTM B671-81(1999)e1 - 10.5.1999 | ||
| 1. Scope | ||
1.1 This specification covers refined iridium as sponge and powder in two grades as follows: 1.1.1 Grade 99.80 -Iridium having a purity of 99.80%. 1.1.2 Grade 99.90 -Iridium having a purity of 99.90%. Note-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 E29.1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only. | ||
| 2. Referenced Documents | ||
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