| Component | Specification | |-----------|---------------| | Vacuum chamber | Transparent (glass, acrylic), sealable, with a rigid or flexible top | | Vacuum source | Vacuum pump or aspirator capable of achieving target vacuum | | Vacuum gauge | Accuracy ±2.5% of reading or ±2.5 mmHg, whichever is larger | | Immersion liquid | Clean water (default). Other liquids (e.g., water with wetting agent, oil) may be used if water wets package poorly. | | Timing device | ±1 second accuracy | | Pressure release valve | Slow venting to avoid agitation |
The test specimen is completely submerged in a fluid (usually water) inside a transparent vacuum chamber. astm d3078 pdf 2021
It operates by placing the package in a vacuum chamber filled with water. A vacuum is applied, causing the air inside the package to expand, forcing it out through any leaks, creating visible bubbles. Scope and Applications It operates by placing the package in a
: Verifying the sterile barrier of surgical tool pouches. forcing it out through any leaks