多晶硅用回收氢气中氮气、氧气的测定气相色谱法填充柱如下：

名称：填充柱
规格：3m*3.175（外径）
型号：5A
柱效高，O2,N2分离好，结果准确可靠。 The gas chromatography packed column for the determination of nitrogen and oxygen in the recovery of hydrogen for polysilicon is as follows:

Name: Packed column
Specification: 3m*3.175 (outer diameter)
Model: 5A
High column efficiency, good separation of O2 and N2, accurate and reliable results.