Application of ¹²⁵I in Micropipettor Check

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 differences in radioactive count rates of 125I aspirated between 2 qualified micropipettors,but significant differences are recorded beteen qualified and unqualified micropipettors.So 125I radiometry agrees with gravimetric tests,and can be used as a laboratory constant test of micropipettors.