We can get high purity of sample DNA by this simple and practical new method, it can meet the requirement of routine molecular biochemistry experiments.
结论改良碱裂解法操作简单、实用，所得样品纯度高，达到了分子生物学常规实验的要求。
A glass tube containing catalyst 401 which is used as a color indicator for trace amount of oxygen was connected with the sample tube to monitor the purity of carrier gas during operation.
为了检测载气的纯度，在样品管进口直接连接装有变色的401型脱氧催化剂的检测管。
The determination of trace silicon in high-purity barium titanate by GFAAS method is studied, in which the sample is dissolved in hydrofluoric acid with high pressure seal.
用石墨炉原子吸收光谱法研究钛酸钡中痕量硅的测定，在高纯钛酸钡新领域的研究及生产中都有重要的现实意义。
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