Abstract: The influence of methods for cleaning low carbon uranium scraps sample on the determination of their carbon contents was studied with emphasis on the effect of cleaning solvents, including distilled water, some organic reagents, and nitric acid. The experimental results show that better cleaning results can be achieved by sequential treatment of low carbon uranium scraps sample with distilled water, hot nitric acid (volume ratio 1∶1), acetone, and ethyl ether. Different cleaning consequences were observed with various cleaning methods, and possible reasons were discussed.