| 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 |
Optional: A transparent top plate for observing packages that float. astm d3078 pdf 2021
The 2021 revision (designated D3078-21) introduced several clarifications and technical updates compared to the previous 2018 or 2014 versions. When you acquire the astm d3078 pdf 2021, you will notice the following key updates: Warning: Avoid free PDFs from unknown websites –
To improve bubble visibility, the standard recommends using a wetting agent (surfactant) in the water. The 2021 update includes more specific instructions on surfactant concentration and water temperature to ensure repeatability across labs. water with wetting agent
ASTM standards are copyrighted and not freely available. To get the official PDF:
Warning: Avoid free PDFs from unknown websites – they are often outdated (D3078-02(2013) or fake), and using them for compliance is invalid.
