Compressed Volume Structure Tester
Void volume testing – physical characterisation to astm d7854 and much more! for carbon black, silica or other granulate, powder & porous materials
The CVST by HITEC Luxembourg is a void-volume tester, measuring void volume versus pressure of a sample. It meets the requirements of the ASTM D7854 “Standard Test Method for Carbon Black-Void Volume at Mean Pressure”.
The three different configurations give to the end user the possibility to identify the right solution that fits the need in terms of performance and budget.
- Extensive research by HITEC Luxembourg and its partners has shown that:
A very detailed physical characterisation can be achieved, obtaining several independent material properties, beyond the basic results from ASTM D7854
- The test method can be equally applied to various granulate, powder and porous materials (.e.g. carbon black, silica, ceramics)
Beyond the void volume data related to structure, the CVST generates additional metrics that reflect the physical properties of the sample.
The fact that the CVST does not need any additives or consumables (like the oil in ASTM D2414 and D3493 methods for oil absorption numbers), not only makes void volume testing a very clean method, but it also results in outstanding repeatability.
From a practical point of view, the compression chamber has been designed to facilitate sample handling, while optimizing accuracy.
- Measurement of:
Void volume vs. applied, transmitted & geometric mean pressure
Residual void volume reﬂecting COAN structure
Material friction losses
Electrical conductivity of carbon black
- Controlled compression and decompression – patent by HITEC Luxembourg
- Compatible with various porous materials (tested with carbon black, silica, and ceramics)
- No wear parts
- Minimal maintenance
- Option ½” or 1” cylinder
CUSTOMER SATISFACTION PROMISE
We offer worldwide installation and training services by our experienced engineers and technicians.