This special specimen-examination device was conceived by Mr. Tsai Kenduo, an employee of the National Taiwan University Hospital, in 1978. It was designed together with Professor Gao, Zhaocun, and finally completed by the hospital's woodworking workshop, becoming the hospital's exclusive invention.

This equipment solves the problem that ordinary test tube racks have small capacity and cannot accommodate a large number of specimens. It can accurately place the serum into corresponding test tubes and can rotate so that multiple technicians can access serum samples at the same time. Each patient's serum samples will be separated by test items and arranged in order. The equipment is numbered on top for easy identification.

This equipment was mainly used in the Department of Laboratory Medicine, but it was discontinued after the automatic specimen processing system was put into use in 1992.