Plastic density, moisture & conditioning
Separate non-cellular resin density, foam apparent density, absorbed water and initial moisture. Condition reference and candidate specimens consistently. Karl Fischer and loss-in-weight measurements answer different analytical questions when other volatiles are present.
Sample considerations
- ASTM D792: Non-cellular specimen, immersion liquid, temperature and voids
- ASTM D570: Thickness, drying/conditioning, immersion duration and water temperature
- ASTM D2240: Scale, thickness, support, dwell and temperature
- ASTM D618: Humidity, temperature, conditioning history and referring specification
- ASTM D6869: Resin, sample preparation, interfering constituents and target range
- ASTM D1505: Specimen form, gradient liquid, temperature and voids
- ASTM D6980: Drying conditions and expected volatile additives
- ASTM D1622: Foam specimen dimensions and skin/core selection
- ISO 1183-1: Specimen form and immersion, pycnometer or titration method
- ISO 62: Specimen thickness, water/humidity exposure, conditioning and duration
- ISO 291: Constant atmosphere, time, referring method and specimen history
- ISO 868: Scale, specimen support, thickness and dwell