| | Extech 防水CL200袖珍余氯测试仪 | 19 | ￥1900.00 | ￥1900.00 | | ￥1900.00 |  |
| | Spectra/Mesh 146422 滤膜 | 18 | ￥1850.00 | ￥1850.00 | | ￥1850.00 | |
| | Spectra/Mesh 115×145微米 屏幕光盘式滤膜 | 28 | ￥2890.00 | ￥2890.00 | | ￥2890.00 | |
| | Thermo Scientific Hypersil 28805-103030 BDS氰基色谱柱 - 3.0mm内径，长度100mm，5μm的颗粒大小 | 50 | ￥5065.00 | ￥5065.00 | | ￥5065.00 | |
| | Thermo Scientific HYPERSIL 30705-252130 APS-2（氨基）柱 - 长度250mm，2.1mm内径，粒径5μm的 | 50 | ￥5065.00 | ￥5065.00 | | ￥5065.00 | |
