Soxhlet extractor is better. Bulb extractors (also called Swann necks or Swank necks) are commonly used in operations such as liquid-liquid extraction and solvent recovery. The snake extractor is suitable for solid phase-liquid phase separation. The Soxhlet extractor has the above two functions. The Soxhlet extractor has three advantages.
1. Multiple extractions can be performed to make the separation more complete.
2. The solvent can be easily evaporated after extraction to reduce the loss of compounds.
3. It can avoid the interference of moisture and make the separation effect better. Although the bulb and coil can also be used for separation, it can only perform one extraction, and it is easier for water to mix in during the extraction process, which affects the separation effect.