Microwave Digestion Systems

Milestone Ethos UP Microwave Digestion System
Milestone UltraWAVE Microwave Acid Digestion System
Milestone UltraCLAVE Next Generation Microwave Digestion System

Ethos UP

Intelligent, powerful microwave digestion system

– No method development
– Enhanced safety features
– Remote connectivity

Discover Ethos UP


Game changer in microwave sample prep

– Unmatched throughput
– Lower operating costs
– Improved workflow

Discover UltraWAVE


Next generation microwave digestion system

– Extraordinary performance
– Extremely high throughput
– Long-term savings

Discover UltraCLAVE

Elemental analysis, the practice of studying which elements comprise a sample matrix, can be performed using a variety of analytical techniques including AA, ICP-OES, ICP-MS or XRF. Most of these techniques, require the sample to be solubilized prior to analysis – a process referred to as sample prep. As analysis techniques continue to improve and become more sensitive, an even greater emphasis is being placed on proper sample prep.

Microwave digestion is widely recognized as the most robust sample prep technique for AA, ICP-OES, or ICP-MS analyses. Microwave digestion involves combining the sample matrix and acids in a pressurized container and elevating the solution past the boiling point of the acid which significantly accelerates the digestion. Given the high operating temperatures and pressures, microwave digestion can be applied to a much wider range of samples (environmental, agriculture, consumer products, food and feed, pharmaceutical products and more) to produce a clear digestate.

Today, three primary types of microwave digestion systems exist:

1. Traditional

Traditional rotor-based systems (Ethos UP), were developed in the early 1980’s and are the most commonly used microwave systems. Rotor-based systems use a number of individualized reactors, positioned in a rotor, inside a large microwave cavity. A number of different rotors, to cater to a variety of applications, are modular to the system and can be used virtually interchangeably.

2. Sequential

Sequential microwave systems are relatively new and originally developed for the synthetic chemistry market. These systems typically operate at relatively mild temperatures and pressures and may not be suited for samples that require more aggressive digestion parameters. Unlike rotor-based systems, which enable the operator to process up to 44 samples simultaneously, sequential systems digest samples one-by-one.

3. Single Reaction Chamber

Single Reaction Chamber (SRC) technology was pioneered by Milestone in 2005 and has revolutionized the way many laboratories approach sample prep by eliminating the need for individual pressurized reactors. By using a single, reinforced stainless steel chamber, different sample matrices, of even the most difficult kind, can be digested simultaneously. The unique capabilities of the SRC line of systems make them the most flexible on the market today.

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