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1978年6月中国计量科学研究院于上海召开了放射性核素测量比对会。参加会议的有国防科委、二机部、科学院及计量部门等八个单位。共有十七套装置参加比对测量。其中有4πβ(PC)—γ符合法,4πβ—γ(Ge(Li))反符合法、4πβ(LS)—γ液闪符合法、4πβ液闪测量法及β—γ—γ方法等。比对结果的一致性在±0.7%以内。
In June 1978, China Institute of Metrology held a radionuclide measurement comparison meeting in Shanghai. Participate in the meeting of the National Defense Science and Technology Commission, the second machine, the Academy of Sciences and measurement units eight units. A total of 17 sets of devices to participate in the comparison measurement. Among them, 4πβ (PC) -γ coincidence method, 4πβ-γ (Ge (Li)) anti-coincidence method, 4πβ (LS) -γ liquid scintillation coincidence method, 4πβ liquid scintillation measurement method and β-γ-γ method. The consistency of the results is within ± 0.7%.