A sodium sulfate drying device is available for removal of water from water-immiscible organic solvent extracts. This cartridge attaches to the male luer outlet of a syringe containing the extract. Traces of water are removed as the sample is pushed through the drying device into a collection vial.

The device includes 1500 mg sodium sulfate, 0.45 µm polypropylene filter, and tube tip for dispensing into a narrow-mouth vial.