ASTM C 1408:2016

1.1 This test method covers the determination of carbon in nuclear-grade uranium oxide powders and pellets to determine compliance with specifications. 1.2 Gadolinium oxide (Gd 2 O 3 ) and gadolinium oxide-uranium oxide powders and pellets may also be analyzed using this test method. 1.3 This test method covers the determination of 5 to 500 µg of residual carbon. 1.4 This test method describes an induction furnace carrier gas combustion system equipped with an infrared detector. It may also be applied to a similar instrument equipped with a thermal conductivity detector. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5.1 The preferred system of units is micrograms carbon per gram of sample (µg/g sample) or micrograms carbon per gram of uranium (µg/g U). 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.