Milestone microwave rotors and sensors

Milestone offers a wide variety of vessels for all applications from digestion, synthesis, extraction, evaporation, fusion, and protein hydrolysis The vessel technology is continuously enhanced to provide analysts with the latest tools for their application. Coupled with the extensive range of rotors are the advanced reaction monitoring sensors and micro-inserts.

Milestone ‘vent-and-reseal’ vessels are the foundation of it’s microwave digestion technology. This patented technology provides analysts with unsurpassed performance capabilities. While other devices use membranes or burst disks that render a vessel useless after venting, the Milestone system releases only the excess pressure from the vessels. This vessel technology is the perfect complement to the Ethos pressure-responsive door, resulting in the safest microwave system available today.

Two completely new rotors offering both high quality digestion and high sample throughput are available for the ETHOS UP and ETHOS EASY. The SK-15 is a high-pressure rotor featuring up to 15 TFM vessels with a volume of 100 ml and suitable for all applications. The MAXI-44 is a high-throughput rotor featuring up to 44 TFM vessels with a volume of 100 ml and suitable for a wide range of samples including environmental and all organics. Both rotors are fully compliant with commonly used standard methods, such as the US EPA 3015, 3051, and 3052. The SK-15 and the MAXI-44 feature an enhanced ‘vent-and-reseal’ technology for controlling the inner pressure of all vessels with complete safety. The ‘vent-and reseal’ approach for the pressure release is the foundation of Milestone’s leadership in microwave digestion technology.

This patented (US Patent 5,270,010) technology provides the operator with unsurpassed safety and performance capabilities: highest temperature and pressure, highest safety standards, ease of use, and very fast cooling (180°C to 40°C in 10 minutes). While other systems use membranes or burst disks that render a vessel useless after venting, the Milestone system releases only the excess pressure from the vessel. This ensures that there is no stress to the door of the microwave system and no loss of sample as could happen in the case of a membrane or disk bursting. Finally, a large selection of high purity quartz and TFM inserts is available for the SK-15 and the MAXI-44 rotors for smaller sample amounts or to minimise the dilution factor of the analytical solution.

Advanced reaction sensors

The Milestone microwave systems can be used with a variety of advanced reaction sensors, including contact-less temperature and pressure control in all vessels, and direct temperature and pressure control in a single reference vessel.

Comparison of burst disk venting and Milestone ‘vent and reseal’ venting technology

Burst disk venting

When a specific pressure is achieved, the disk bursts, and the pressure dramatically drops to zero. Sample is lost, and the program must be manually stopped.

Milestone unique vent-and-reseal venting

Only the excess pressure is released from the vessel, and the digestion process can be completed in full safety.

Flexible applications

A wide range of vessels are available from Milestone, to accommodate all sample preparation requirements.

Rotor Vessels nr. Application Vessel volume Max. Temperature Max. Pressure
SK-15 15 Digestion 100ml 300°C 100 bar
MAXI-14 14 Digestion 100ml 200°C 35 bar
MAXI-44 44 Digestion 100ml 200°C 35 bar
Fastex -24 24 Extraction 100ml
SR-12-M 12 Extraction/hydrolysis
RAR004 12 Evaporation

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