The length of the cellulose thimble plays a crucial role in the Soxhlet extraction of cellulose, but the length of the siphon tube is approximately above 17 cm and cellulose thimble of that needs to be above that size and, due to its unavailability, switching to filter paper raises a question of its size and pore size so that important components stay in the filter paper after the Soxhlet extraction.
you can deploy Copilot When using a Soxhlet apparatus for cellulose extraction, the size and pore size of the filter paper or cellulose thimble are crucial to ensure efficient extraction and retention of important components. Here are some key points to consider:
### Cellulose Thimble Sizes
Cellulose thimbles are typically used in Soxhlet extraction due to their high mechanical strength and retention capabilities. The sizes of cellulose thimbles can vary, but common dimensions include:
- **25 x 100 mm**: This size is often used for standard Soxhlet extractions.
- **30 x 80 mm**: Another common size for various extraction applications.
- **43 x 123 mm**: Suitable for larger scale extractions.
### Filter Paper Sizes
If switching to filter paper due to the unavailability of cellulose thimbles, it's important to choose the right size and pore size to match the extraction requirements:
- **Diameter**: The filter paper should fit snugly within the extraction chamber. Common diameters range from 10 mm to 60 mm.
- **Pore Size**: The pore size of the filter paper is critical for retaining the extracted components. Single thickness filter papers typically have a nominal particle retention of 10.0 µm, while double thickness papers have a retention of 6.0 µm.
### Practical Considerations
- **Length of the Siphon Tube**: Ensure that the filter paper or thimble extends above the siphon tube to prevent overflow and ensure efficient extraction.
- **Material**: High-quality cellulose or glass microfiber thimbles are recommended for their strength and retention properties.
For more detailed information on the setup and operation of Soxhlet extraction, you can refer to resources like the [Soxhlet Extraction Guide](https://www.hielscher.com/wp-content/uploads/Soxhlet-Extraction-Guide-for-Academic-and-Professional-Domains-Hielscher-Ultrasonics-Germany.pdf) and [Whatman Cellulose Extraction Thimbles](https://www.sigmaaldrich.com/US/en/product/aldrich/wha2800308).
https://www.fishersci.ie/webfiles/uk/web-docs/0528_LC.pdf
https://www.scharlab.com/in/en/consumables/filtration/cellulose_extraction_thimbles_standard_and_for_soxhlet
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