Advanced Vessel Technology

MPR-600/12S High Pressure Segmented Rotor for Microwave Digestion

Milestone’s patented Microwave Digestion Rotor (MDR) technology provides analysts with unsurpassed performance capabilities (operating pressure and temperature) and the highest standard of safety in closed vessel microwave digestion. A new rotor with advanced “segmented” design has been added to Milestone’s MDR line. The innovative segmented rotor design concept increases sample throughput while maintaining the high performance and safety standards of Milestone’s original mono-bloc MDR rotors. The new high pressure segmented rotor contains 12 vessels, operating at the highest temperature (300°C), or pressure (100 bar, 1500 psi). The increased number of vessels and forced air cooling arrangement of Milestone segmented rotors enhance productivity in microwave digestion. A central “chimney” manifold distributes cooling air to every vessel. Forced air flow is directed on the vessel shields at the liquid level line to dissipate heat. Following completion of a digestion procedure the vessels may be air cooled inside the microwave system, or removed for forced air cooling outside the system. Air cooling can also be employed during a microwave digestion run for applications requiring the use of high boiling acids, such as sulphuric and phosphoric acid. Internal temperature and pressure control are available for the new rotor. Every rotor segment has a special port to permit monitoring and control of the external surface temperature of vessels in systems equipped with the infrared temperature control option.

Performance features of the new Segmented Rotor

• Vessels can be individually installed and removed.
• Increased sample throughput.
• Forced air cooling of vessels via central “chimney” manifold.
• Vessel segments are sequentially numbered for position indexing/automation.
• Rotor segments are designed for manual and automatic procedures.