| 摘要 |
PURPOSE: To realize a good analysis by arranging the perforation of end crown so that the axis of each receptacle inclines at a specified angle against the axis of a drum thereby homogenizing the sample in an analytical tube. CONSTITUTION: A cylindrical rotary drum 11 forming a core is integrated with at least two circular end crowns 13, 14 arranged at each end of the drum on a plane vertical to the rotary axis of a drum 11. One end crown 13 is provided with perforations 17 but the other end crown 14 is not provided. Furthermore, intermediate circular crowns 15, 16 are provided and each of which is provided with perforations 17 of same number and size as those of the end crown 13. Each perforation 17 is arranged such that the axis of each receptacle 18 inclines at an acute angle of 45 deg. or less against the axis of the drum 11. |
