Overview
Solid Phase Extraction (SPE) columns are sample preparation devices that selectively retain target compounds from liquid samples. They consist of a cylindrical housing packed with chromatographic sorbent material, typically between two porous frits. SPE columns are standardized for reliability in analytical workflows, with common sizes including 1 mL, 3 mL, and 6 mL reservoirs. The technology evolved from liquid-liquid extraction methods, offering superior reproducibility and reduced solvent consumption. Modern SPE columns support diverse chemistries—reverse phase (C18, C8), normal phase (silica), ion exchange, and mixed-mode sorbents—enabling precise isolation of analytes across pharmaceutical, environmental, and food safety applications.
Physical and Chemical Properties
SPE column performance depends on the sorbent's physical characteristics. Surface area typically ranges 500-1200 m²/g, with pore sizes of 40-100 Å optimized for small molecule retention. Particle sizes are tightly controlled (40-60 µm) to ensure consistent flow rates during vacuum or pressure processing. Chemical stability varies by sorbent type: C18-bonded silica withstands pH 2-7.5, while polymer-based sorbents tolerate pH 1-14. Retention mechanisms include hydrophobic interactions (reverse phase), hydrogen bonding (normal phase), and electrostatic attraction (ion exchange). Sorbent mass per column ranges from 100 mg for analytical samples to 1000 mg for preparative scale.
Main Applications
In pharmaceutical analysis, SPE columns purify drug compounds from biological matrices like plasma or urine prior to LC-MS. Environmental labs use them to concentrate trace pollutants (pesticides, PAHs) from water samples. Food safety applications include mycotoxin removal and vitamin extraction. The clinical sector employs SPE for therapeutic drug monitoring, while forensic labs use specialized columns for drug abuse screening. Recent advancements include molecularly imprinted polymers (MIPs) for selective extraction of specific compound classes, and HLB (hydrophilic-lipophilic balance) sorbents for polar compounds.
Safety and Storage
SPE columns contain fine particles that may become airborne during handling. Use in well-ventilated areas or with dust control measures when transferring bulk quantities. Silica-based sorbents require particular caution due to potential respiratory irritation. Storage conditions significantly impact column performance. Maintain original packaging until use to prevent moisture absorption (critical for silica gels) or oxidation of certain polymer sorbents. For long-term storage (>6 months), keep columns in desiccators with humidity indicators. Discard columns with discolored sorbent or broken frits.
B2B Procurement Guide
When sourcing SPE columns, specify sorbent chemistry (e.g., C18, SCX), bed mass, and reservoir volume matching your throughput needs. For regulated industries (GMP, ISO 17025), request certificates of analysis documenting lot-specific performance data. Evaluate suppliers based on batch-to-batch reproducibility (typically <15% RSD in recovery tests) and available validation kits. Bulk purchases (100+ columns) commonly reduce costs by 30-50%. Consider automated-compatible formats for high-throughput labs. Leading manufacturers include Waters Oasis, Agilent Bond Elut, and Supelco Discovery.
Related Manufacturers
- 主营：氮吹仪、真空干燥箱、低温恒温槽、固相萃取仪、固相萃取装置、C18萃取柱、HLB萃取柱、固相萃取柱、mcx强阳离子交换固相萃取柱、wax阴离子交换固相萃取柱、florisil固相萃取柱、silica硅胶固相萃取柱、漩涡混合器、旋涡混匀仪
- 主营：2ml冻存管、5ml样品瓶、淋洗液发生罐、八联管、巴氏吸管、试剂槽、细胞过滤器、冷冻管、无粉乳胶手套、移液器、离心管、丁腈手套、棕色冻存管、细胞培养锥形瓶、移液管、冻存盒、2mL样品瓶、冻存管
- 主营：滤芯吸头、移液吸头、离心瓶、固相提取小柱、冻存管、螺口管、PCR管、八连管、细胞培养、吸头
- 主营：国家标准试验设备、日本标准测试设备、国际标准试验设备、欧盟标准试验设备、美国标准试验设备、功能性材料测试、光学仪器、过滤分离测试设备、医药卫生测试仪器、流体控制测试设备、航空航天测试设备、非标定制试验设备、安全防护试验设备、功能性纺织品测试仪器、智能穿戴测试仪器、分析测试仪器
- 主营：色谱填料、C18填料、PSA填料、固相萃取填料、色谱柱填料、柱层析硅胶、固相萃取柱、NH2填料、WAX填料、十八烷基硅烷键合硅胶、MCX填料、薄层层析硅胶板、二甲基硅烷化硅胶薄层板、十八烷基硅烷化硅胶薄层板、高纯硅胶、球形硅胶、硅胶填料、层析介质、硅胶吸附剂、B型硅胶、C型硅胶、硅胶脱色砂、食品级二氧化硅、药品级二氧化硅、啤酒稳定剂
- 主营：冻存管、淋洗液发生罐、阴离子抑制器、色谱柱、离子色谱柱、样品瓶、试剂槽、细胞过滤器
- 主营：黑色吸头、滤芯吸头、透明吸头、固相提取小柱、导电吸头、盒装吸头、滤芯吸嘴、工作站吸头、高透明吸嘴
- 主营：喷雾干燥机、一体化蒸馏仪、脂肪测定仪、固相萃取仪、COD消解仪、微波消解仪、石墨消解仪、二氧化硫蒸馏仪、细胞计数器、微生物限度检测仪、翻转振荡器
- 主营：c18气相、过滤瓶、密封圈、小柱spe、氨基柱、填充柱、芯柱芯、hlb固相、色谱柱、萃取柱、气相色谱柱、柱温箱、固相萃取柱、组件泵、高压阀、活化仪、PEEK、液相色谱仪、微孔滤膜、PEEK接头、吸附剂、色谱填料、四氟管、真空泵、样品瓶
- 主营：试剂盒、交换spe、乙二胺、色谱柱、层析柱空、人补体、spe富集、未封端、萃取管、受体β链、β细胞素、坏死因子、人脑钠素、亲脂平衡、抑制因子、双调蛋白、人苗条素、标准溶液、纤连蛋白、炎性蛋白、人整合素、层连蛋白、多效生长、趋化因子、挡板疏水