Overview
The Soxhlet extractor, invented by Franz von Soxhlet in 1879, is a specialized apparatus for exhaustive extraction of compounds from solid samples. It operates through cyclic solvent distillation, ensuring fresh solvent contact with the sample in each cycle. Common in laboratories, it bridges manual and automated extraction methods. Modern variants include PTFE-coated joints for better sealing and jacketed designs for temperature control. Its modular design typically comprises a flask, extraction chamber, and condenser, compatible with standard glassware setups.
Structure and Working Principle
The apparatus consists of three main parts: a boiling flask (for solvent), an extraction chamber (holding the thimble with solid sample), and a condenser. Solvent vapor rises from the flask, condenses, and drips onto the sample. Once the chamber fills, the solution siphons back to the flask, repeating the cycle. This design ensures minimal solvent use while achieving high extraction yields. The process is self-regulating, making it ideal for unattended operation over hours or days, depending on the analyte’s solubility.
Key Features
1. **Efficiency**: Repeated solvent cycling enhances extraction completeness compared to batch methods. 2. **Versatility**: Compatible with polar/nonpolar solvents (e.g., hexane, ethanol). 3. **Scalability**: Available in 50mL to 2L capacities for R&D or small-scale production. Advanced models feature PTFE stopcocks for solvent recovery or cold-finger condensers for low-boiling-point solvents. The all-glass construction avoids contamination, critical for trace analysis.
Application Areas
1. **Pharmaceuticals**: Extraction of active compounds from herbs (e.g., caffeine, curcumin). 2. **Food Testing**: Fat content determination (AOAC 920.39). 3. **Environmental Analysis**: PCB extraction from soil. In B2B contexts, it’s supplied to labs in agrochemical, cosmetic, and petrochemical industries. Automated Soxhlet systems (e.g., Soxtec) are gaining traction for higher throughput.
Maintenance and Precautions
Regularly inspect glass joints for cracks and grease them lightly to prevent seizing. Clean residues with appropriate solvents (e.g., acetone for organics). Avoid abrupt temperature changes to prevent glass breakage. For safety, use heating mantles (not open flames) with flammable solvents, and operate in fume hoods. Store disassembled to prolong joint lifespan.
B2B Procurement Guide
1. **Standards Compliance**: Ensure ASTM E1386-15 compatibility for regulatory tests. 2. **Supplier Evaluation**: Prioritize ISO 9001-certified manufacturers for consistency. 3. **Customization**: Some suppliers offer tailored tube lengths or solvent recovery attachments. Bulk orders (10+ units) often attract 10–20% discounts. Lead times vary from 2–6 weeks for specialized configurations.
Related Manufacturers
- 主营：储存罐、储酒罐、酿酒设备、酒容器、白酒提取器、不锈钢冷却器、造酒设备、食品蒸粮、分体式吊锅、葡萄酒酿造、固态蒸酒锅、液体存放罐、运输制冷罐、不锈钢酒罐、啤酒发酵罐、保温运输罐、煮酒一体锅、板控温发酵罐、果酒发酵设备、白酒不锈钢锅、卧式车载运输、负压蒸馏设备、保温运输储罐
- 主营：混凝土养护箱、干燥箱、移动养护室、搅拌机、恒湿恒温养护箱、水泥养护箱、养护室、恒温恒湿、水泥抗折抗压一体机、养护设备、摩擦系数、控制系统、工业烤箱、弯曲试验机、试块压力机、数显压力机、自动压力机、鼓风高温烘干箱、水泥胶砂搅拌机、建筑实验室设备、水泥压力机、水泥振动台、全自动压力试验机、电动击实仪
- 主营：混凝土仪器设备、防水卷材仪器设备、涂料仪器设备、沥青仪器设备、岩石仪器设备、管材仪器设备、集料仪器设备、保温材料仪器设备、砖瓦仪器设备、钢筋仪器设备、人造板仪器设备、石膏仪器设备、砂浆仪器设备、密封胶仪器设备、土工仪器设备、水泥仪器设备、交通安全仪器设备、试验夹具
- 主营：试验仪、数显水浴锅、动力粘度计、电动击实仪、抗折试验机、湿度控制仪、耐磨试验机、无侧限压力、承载比测定仪、混凝土抗渗仪、凝结时间测定仪、反复弯曲试验机、恒温恒湿养护箱、沥青设备、混凝土设备、土工设备、粗粒土设备、建筑设备
- 主营：全自动热萃取仪、标准养护箱、压力试验机、热风循环烘箱
- 主营：透明板、平整度仪、清洗疏通车、检测仪器、保温材料制样器、刚度试验机、板式测厚仪、冲击试验机、破乳试验机、静载试验机、水平渗透仪、压力试验机、多功能洒水车、网格布试验箱、纯电动消防车、矿物棉振筛机、内外压试验机、相容性试验箱、憎水性测试仪、集装箱养护室、玻璃棉绝热材料、热荷重试验装置、钢管弯曲试验机、正反弯曲试验机、抗冲击试验装置
- 主营：混合仪、检查仪、提取瓶、消解器、均质器、计数器、振荡仪器、赶酸仪、氮吹仪、干燥箱、电热套、检测仪、压缩机、蒸馏仪、消解仪、解冻仪、集菌仪、消化炉、消解罐、检定仪、氢空一、水质仪、浓缩装置、脚踏开关、分液漏斗
- 主营：土工布实验仪、粗粒土实验仪、路强仪、沥青仪器、实验室仪器、固结仪、鼓风干燥箱、砂浆抗渗仪、水泥检测仪、压力试验机、抗折抗压一体机、管材检测仪、防水卷材检测仪、门窗性能检测、保温性能检测、搅拌机、标准养护室、养护箱、恒温溢流水箱、振实台、实验夹具、胀破强度试验
- 主营：养护箱、集装箱式标养室、混凝土碳化箱、混凝土试验仪器、水泥砂浆试验仪器、沥青混合料试验仪器、水泥压蒸釜测定仪、恒温恒湿养护设备、电液伺服压力试验机、混凝土压力试验机、电动击实仪、万能材料试验机、恒湿恒温养护箱、移动养护室、土工布测厚仪、水泥胶砂搅拌机、低温试验箱
- 主营：移动养护室、标准水泥养护箱、混凝土抗渗仪、沥青试验仪器、混凝土搅拌站试验仪器、漆膜冲击器、公路试验仪器、水泥砂浆试验仪器、压力机、水泥压蒸釜测定仪、氧指数测定仪、混凝土徐变仪
- 主营：万能试验机、土壤密度测试、抗压测试设备、粗粒土试验检测仪器、土壤检测仪器、混凝土检测仪器、土工布检测仪器、沥青混合料检测仪器、电工套管实验仪器、水泥砂浆检测仪器、粉体粉末试验检测仪器、石油沥青检测仪器、测试仪、试验机、试验箱、切割机、试验仪、陶瓷检测设备、压力机、管材检测设备、防水卷材检测设备、无损检测设备、工程测绘设备、安全检测设备
- 主营：沥青实验仪器、实验室仪器及耗材、水泥试验仪器、混凝土试验仪器、钢筋试验仪器、土工试验仪器、砂浆实验仪器、压力试验机
- 主营：沥青混合料、土工布检测、电工套管、混凝土检测仪器、无损检测仪器、水泥砂浆检测、压力机、万能试验机、塑料管材、防水卷材
- 主营：漆膜回、厚度2mm、流动仪、测斜管、养护箱、分散机、测量仪、耐冲击、电极头、测定仪、弯折仪、测读仪、轴力计、抽提仪、半白纸、漆膜摆、筛析仪、点荷仪、硬度计、土壤蝶、测定土、沥青蜡、土工布、引伸仪、测试仪
- 主营：搅拌机、混凝土检测、压力试验机、公路仪器、试验检测仪器、土工布检测仪器、土工仪器、建筑仪器、粗粒土检测仪器、陶瓷砖检测仪器、电动击实仪、沥青车辙试验仪、土壤检测分析仪、混合料拌和机、粗粒土相对密度仪、检测仪、击实仪、水泥检测分析仪、沥青检测分析仪、各种夹具、应变式直剪仪、耐磨试验机、导热系数测定仪、管材静液压试验机、混凝土检测仪
- 主营：测试仪、试验机、试验箱、脱模器、混凝土检测仪器、水泥检测仪器、电工套管实验仪器、土壤检测仪器、测定仪、切割机、试验仪、密度试验、乳化沥青、电动击实仪、自动拌和机、沥青车辙试验、路面材料扭剪、沥青旋转薄膜、合成材料磨损、间粘结力拉拔、混合料拌和机、粗粒土垂直渗透仪、粗粒土相对密度仪、门窗性能检测、冻融试验箱