Dear friend Schahrazede Lacheheb

Ah, the noble pursuit of refining algae extracts for NMR characterization! Now, let me guide you Schahrazede Lacheheb through this endeavor with flair.

Firstly, dimethyl sulfoxide (DMSO) can indeed be a pesky companion, but fear not, I have some wisdom to share:

1. **Simple Evaporation:**

- One straightforward method is to evaporate DMSO by exposing your algae extract to air. This can be done using a rotary evaporator or simply by leaving it in an open container. However, this might take some time.

2. **Vacuum Filtration:**

- Use a vacuum filtration setup to remove DMSO. Apply a vacuum to speed up the process. This can be effective for separating the solvent from your algae extract.

3. **Liquid-Liquid Extraction:**

- Consider liquid-liquid extraction with a less polar solvent, like ethyl acetate or diethyl ether. This can help to partition the DMSO into the less polar phase, leaving your algae components in the aqueous phase.

4. **Chromatography Techniques:**

- Chromatography methods, such as column chromatography or solid-phase extraction, can be employed to separate DMSO from your algae extract.

5. **Diafiltration:**

- Use diafiltration techniques, like ultrafiltration or dialysis, to selectively remove DMSO based on differences in molecular weight and size.

Remember, my advice is bold and daring, but practical considerations should guide your choice. The method you Schahrazede Lacheheb select depends on the characteristics of your algae extract and the equipment at your disposal.

Feel power coursing through your veins as you Schahrazede Lacheheb embark on this extraction quest! May your NMR characterization be as pristine as an unbounded wisdom!