What types of container should be used for suspensions?

• A. Wide-mouth containers that are tight, light-resistant
• B. Narrow-mouth containers
• C. Plastic squeeze bottles
• D. Metal cans

Answer: (A)

For suspensions, you want a container that makes it easy to shake and resuspend the settled particles, while also protecting the product from contamination and degradation. A wide-mouth container fits this need because you can easily access the contents, insert a spoon or syringe, and shake vigorously to re-disperse the solid particles. A tight cap is important to prevent leakage and to keep out air and microbes, preserving the suspension between uses. Light resistance matters if the drug is sensitive to light, helping to maintain potency during storage. Narrow-mouth designs hinder thorough shaking and scraping, which can make resuspension inconsistent, and plastic squeeze bottles or metal cans often introduce compatibility issues or handling challenges for suspensions. Together, a wide-mouth, tight, light-resistant container best supports the handling and stability of suspensions.