semi-permeable containers
- Guideline or reference source
- ICHQ1A Stability testing of new drug substances and drug products
- Definition
- Containers that allow the passage of solvent, usually water, while preventing solute loss. The mechanism for solvent transport occurs by absorption into one container surface, diffusion through the bulk of the container material, and desorption from the other surface. Transport is driven by a partial-pressure gradient. Examples of semi-permeable containers include plastic bags and semi-rigid, low-density polyethylene (LDPE) pouches for large volume parenterals (LVPs), and LDPE ampoules, bottles, and vials.
- Broader Term
- container
- Related Term
- impermeable container
- solvent
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