Microtrac BELPREP VAC Series
A vacuum degassing and pretreatment system for adsorption analysis. It removes moisture and gases from samples to ensure accurate surface area and pore measurements.
System Capabilities
The BELPREP VAC series prepares samples for adsorption analysis by removing moisture and adsorbed gases under vacuum or inert gas flow. It supports independent heating of multiple samples.
Pretreatment improves accuracy for BET and pore size measurements by establishing a reliable dry mass before analysis.
Operating Modes
Vacuum Heating
Standard degassing under vacuum to remove moisture and gases.
Flow Heating
Inert gas purge for samples sensitive to high vacuum.
Independent Ports
Simultaneous pretreatment of 3 or 6 samples.
Safety Zone
Radiation zone for controlled cooling after heating.
Technical Specifications
| Models | VAC II (3 ports) or VAC III (6 ports) |
|---|---|
| Max Temperature | 430 C (VAC II) or 450 C (VAC III) |
| Pressure Limit | Do not exceed 0.2 MPa (G) |
| Vacuum Requirement | External rotary pump (>= 20 L/min) |
| Heating Programs | Programmable with multi-step profiles (VAC III) |
| Recommended Gas | Inert purge gas such as nitrogen |
Comparison: This System vs Conventional Alternative
A high-level comparison to highlight performance and workflow advantages.
| Feature | This System | Conventional Method |
|---|---|---|
| Precision | Higher accuracy and repeatability | Standard tolerance |
| Workflow | Streamlined and automated | Manual or multi-step |
| Throughput | Faster turnaround | Slower cycle time |