国产精品人人妻人人爽麻豆-97色网-欧美一级在线免费观看-超碰97人人做人人爱可以下载-亚洲影视一区二区三区-综合亚洲桃色第一影院-深爱婷婷-亚洲免费在线观看视频-日韩精品午夜-91高潮大合集爽到抽搐-久久国产劲爆∧v内射-百度-久久精品午夜一区二区福利-亚洲女人的天堂www-日韩视频精品-3p视频在线观看

1. With the design of bell shaped cylinder head, the sample distribution is more uniform, the sample loading amount can be increased, and the resolution efficiency can be improved;

2. The bellmouth column head can prevent the high-speed flow from damaging the column bed;

3. The stainless steel jacket of the inner glass lined tube of the upper sample column replaces the traditional quantitative ring of the flow injection valve, which is conducive to the preparation of high concentration samples and thorough elimination

4. In addition to the phenomenon of high concentration sample blocking the valve interface;

5. Flange column is easy to disassemble and clean;