赛默飞 气相色谱柱及耗材 用于 Thermo 仪器的刃环 | 290VA191

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GC 进样口刃环（石墨密封垫）

进样口刃环材质种类较多，100% 石墨材质具有渗透氧的功能，所以不建议用在如MS 这样的氧敏感型检测器，对于氧敏感型检测器( 如MS 或ECD 检测器)，推荐使用85%Vespel15% 石墨材质的刃环。根据色谱柱的内径选择合适的尺寸，能起到良好的密封作用。

100% Graphite Ferrules

Thermo Scientific 100% graphite ferrules are a soft material that is porous to oxygen, making them suitable for most applications except GC-MS interface connections. These easy-to-use ferrules form a soft grip with the column and provide a stable seal.

15% Graphite / 85% Vespel Ferrules

The mechanically robust 15% Graphite/ 85% Vespel ferrules have a long lifetime and are compatible with GC-MS. These ferrules form a strong grip with the column and cannot be reused as they form a permanent seal with the column. They have a temperature limit of 350°C, but must be re-tightened after initial temperature cycles.

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