More free sulfhydryls and higher sample concentration mean that one should consider using higher concentrations of reducing agent.
自由巯基数目越多，样品浓度越高，还原剂的用量就越大。
The sample concentration and the ratio of elution solution which influence the separation effect of PC and PE were further researched.
考察了进样浓度和洗脱液配比对分离效果的影响。
These pumps are widely used for applications including filtration, sample concentration, solid phase extraction. They are the important basic instruments in the lab.
无油真空泵广泛应用于过滤、样品浓缩、固相萃取等装置中，是实验室重要的基础设备。
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