TABLE IV

Headspace Carbon Dioxide Partial Pressure in Sample Vials with Laser-Drilled Defects, Both Before (T0) and After (T1) conducting the CCI Test within ∼24 h of Sample Preparation. Values Show the Averages of Five Consecutive Measurements on Each Vial. All Vials with a Liquid Fill Had the Defect Located Below the liquid Level

Nominal Defect Size [μm]FillHeadspace Carbon Dioxide Partial Pressure [Torr]Number of Leaking Vials Detecteda
T0T1
MeanStDevMinMaxMeanStDevMinMax
2Empty10.0119645.32617510/10
PBSb00.10000.1000/10
BSAc in PBS00.10100.1000/10
5Empty10.01156733.949861610/10
PBS00.100233169.32147610/10
BSA in PBS00.101181122.42542010/10
10Empty10.01155921.152058910/10
PBS00.100605181.026177810/10
BSA in PBS00.100575115.247180110/10
NCdEmpty10.01110.0110/3
GPCeEmpty10.0127091.07087103/3
  • a Leakage was a change ≥ 1 torr between T0 and T1.

  • b PBS is phosphate-buffered saline.

  • c BSA is bovine serum albumin.

  • d NC is negative control.

  • e GPC is gross positive control.