Proper container preparation is essential to maintain the integrity, safety, and efficacy of DMSO solutions, given its reactive and penetrative nature.

1. Select the Appropriate Container Material

• Use glass or high-grade plastic (e.g., polypropylene or HDPE) resistant to DMSO’s solvent action.
• Avoid polycarbonate, PVC, or polystyrene, which may degrade or leach harmful substances.

2. Ensure Pharmaceutical-Grade Cleanliness

• Wash thoroughly with distilled water and mild, non-reactive detergent.
• Rinse multiple times to eliminate all residues.
• Finish with a rinse of 70% ethanol or sterile water to sterilize, depending on usage (medical or lab).

3. Drying and Storage Conditions

• Air dry in a dust-free environment or use a sterile drying cabinet if available.
• Cap the container immediately after drying to prevent airborne contamination.
• Store at room temperature in a clean, dark, and dry location.

4. Labeling

• Clearly mark the container with:
  • Concentration (e.g., “70% DMSO”)
  • Date of preparation
  • Intended use or application site
• Use chemical-resistant labels to avoid fading or peeling.

5. Inspection Before Use

• Visually inspect for cracks, cloudiness, or residue inside the container.
• Smell check: if an unexpected odor is present, discard and re-prepare.