AssayIndex
Physical

Closure integrity

Whether the stopper and crimp maintain the container's seal and vacuum. A failure lets in moisture and oxygen.

Related terms

Cake shrinkage
Separation of the cake from the vial wall. Indicates moisture uptake after drying, or a closure-integrity failure.
see also Cake
Headspace oxygen
Oxygen in the gas space above the product. Correlates with sulfoxide content and is essentially never measured.

Where this term appears

The glossary exists to make record pages readable without a chemistry degree. Every technical term on a report resolves here.