| instrument identity |
| model | EXPEC 790S |
| brand / line | EXPEC · Sample Pretreatment |
| instrument type | Microwave digestion / sample pretreatment system |
| intended use | Microwave-assisted digestion and laboratory sample pretreatment for controlled high-pressure and high-temperature workflows. |
| cooling & efficiency |
| cooling concept | Programmed independent cooling-water circulation for rapid cooling of high temperatures |
| cooling process | Precision spiral water-cooling process to enhance heat-exchange area and maximize cooling efficiency |
| cooling result | Rapid cooling with no secondary boiling due to pressure relief |
| microwave & pressure performance |
| microwave transmission | Directly coupled microwave excitation and waveguide transmission |
| waveguide technology | Patented waveguide coupling technology |
| impedance matching | Complete microwave impedance matching to optimize transmission |
| pre-pressurisation | 4–10 MPa |
| reaction chamber concept | Single reaction chamber; all samples react at the same pressure and temperature |
| temperature measurement | Lined and protected bottom temperature measurement without contact with the sample solution |
| safety & system control |
| pressure chamber construction | High-pressure chamber design made of duplex steel |
| outer cover / jaws load bearing | Up to 30 MPa |
| overpressure protection | Yes |
| automatic pressure relief | Yes |
| status display | Real-time display of pressure and temperature |
| safety interlock | Temperature, pressure, cooling water, exhaust air and hatch |
| standards reference | Compliant with GB/T 26814 Microwave Disintegration Devices and standard design codes for pressure vessels |
| operation & configuration |
| software control | Tablet-based visual software control |
| workflow style | Streamlined operational processes |
| loading format | Tray for quick loading and unloading of samples |
| tube-rack options | 6 / 8 / 18 / 24 wells |
| tube size range | 6 mL to 50 mL |
| tube materials | TFM and quartz sample tubes available |
| topic | recommendation | note |
| cooling cycle |
Use the programmed cooling-water circulation to improve turnaround after high-temperature digestion |
Spiral cooling structure is intended to improve heat exchange |
| pressure workflow |
Apply suitable pre-pressurisation and approved vessel configuration for the selected method |
Specified pre-pressurisation range: 4–10 MPa |
| sample loading |
Match holder size and tube volume to the planned throughput and sample mass |
6, 8, 18 and 24-position formats are available |
| safety monitoring |
Verify pressure, temperature, cooling water and hatch status before and during operation |
System includes comprehensive safety interlock logic |
📄 source page: EXPEC 790S product page
🧪 workflow focus: microwave digestion & sample pretreatment
🛠️ configuration: rack size and tube material per final setup
🧾 procurement: binding spec = quotation package