^(125)I在微量移液器检验中的应用

Application of ^(125)I in Micropipettor Check

用移液器吸取不同刻度125I溶液,用GC-1200双探头γ计数仪测其放射性计数,并与精密天平称重法结果进行比较,探讨用125I检验微量移液器的可行性。结果显示,2支合格移液器放射性计数无差异,3支不合格移液器与合格移液器之间放射性计数差异显著,此结果与精密天平称重法结果相符,表明125I可用于微量移液器的经常性检验。

Gravimetric test is one of authoritative methods for the measurement and validation of the accuracy and precision of micropipettors. The feasibility of radioactive measurement in the check of micropipettors is studied. There are no significant difference in radioactive count rates of ^125I aspirated between 2 qualified micropipettors, but significant difference are recorded between qualified and unqualified micropipettors. So ^125I radiometry agrees with gravimetric tests,and can be used as a laboratory constant test of micropipettors.