Methods:Using micropipettor instead of capillary in adding liquid.
方法:使用微量移液器定量加液代替毛细管滴加药液。
Gravimetric test is one of authoritative methods for the measurement and validation of the accuracy and precision of micropipettors.
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。
According to Principle of quiescent sedimentation granula analysis, the densimeter method and the piette method are used to get the size grading of fine-grain soil and the errors of two methods are analyzed.
根据静水沉降颗粒分析法计算公式原理,分别采用了常用的密度计法和移液管法求取细颗粒土的粒径级配,分析了两种方法试验误差产生的原因,并证明密度计法较移液管法具有更简便、准确、节能的特点,建议尽量采用密度计法。