Phenom Pharos G2 Desktop FEG-SEM

Tabletop field emission gun scanning electron microscope for high quality imaging across disciplines.

Field emission gun scanning electron microscope

The Thermo Scientific Phenom Pharos G2 FEG-SEM brings field emission SEM to your tabletop. The Phenom Pharos G2 FEG-SEM will outperform many floor-standing SEMs in terms of image quality, while offering a vastly better user experience. For academic and industrial laboratories that so far did not consider SEM a realistic option, the Phenom Pharos G2 FEG-SEM makes FEG performance accessible thanks to its attractive form factor and short training required. Blazing fast sample loading means fast sample exchange, which means higher productivity. Unlike other SEMs, which end up being fully booked, the Phenom Pharos G2 FEG-SEM performs imaging and analysis jobs so quickly that it serves well as a walk-up tool.

The new Phenom Pharos G2 FEG-SEM expands its acceleration voltage range down to 1 kV, to better accommodate insulating and beam-sensitive samples, and up to 20 kV, with a resolution of 2.0 nm that reveals the finest details.

Unique field emission source

Unique among desktop SEMs, the Phenom Pharos G2 FEG-SEM offers a field emission source, which guarantees high brightness, crisp images, and stable beam current.


Excellent resolving power

The Phenom Pharos G2 FEG-SEM offers a resolution of 2.0 nm at 20 kV. Such performance shows the shape of nanoparticles, imperfections in coatings, or other features that would be missed by tungsten SEMs or other tabletop SEMs.


Gentle imaging

With a voltage range down to 1 kV, the Phenom Pharos G2 FEG-SEM enables imaging of beam-sensitive samples, such as polymers, as well as insulating samples, without the requirement to apply a coating. As a result, nanoscale surface features are not obscured.

Higher productivity

While FEG SEMs have a reputation for being difficult to accommodate and difficult to operate, the Phenom Pharos G2 FEG-SEM literally requires only a desk, and less than one hour of training. Master students, visitors, or other researchers typically not trained to work on high-end FEG SEMs can easily use the Phenom Pharos G2 FEG-SEM to create eye-catching images.


A world of information

On the Phenom Pharos G2 FEG-SEM, morphological information is acquired together with compositional information, thanks to SE, BSE, and EDS detectors built into the system. A range of sample holders is available for temperature-controlled or electrical experiments.



  • 2.0 nm (SE), 3 nm (BSE) at 20 kV
  • 10 nm (SE) at 3 kV
Electron optical magnification range
  • Up to 2,000,000x
Light optical magnification
  • 27 – 160x
Acceleration voltages
  • Default: 5 kV, 10 kV and 15 kV
  • Advanced mode: adjustable range between 1 kV and 20 kV
Vacuum modes
  • High vacuum mode
  • Medium vacuum mode
  • Integrated charge reduction mode (low vacuum mode)
  • Back scattered electron detector (standard)
  • Energy-dispersive X-ray spectroscopy (EDS) detetor (optional)
  • Secondary electron detector (optional)
Sample size
  • Up to 25 mm diameter (32 mm optional)
Sample height
  • Up to 35 mm (100 mm optional)


There is no need to batch samples into identical types; any combination of sample types (food, environmental, polymer, cosmetic, pharmaceutical, geological, chemical, and petrochemical) can be digested simultaneously. There is no need to build a method because the same procedure may be used to practically any sample. For the first time, any matrix’s blanks and reference standards can be digested alongside samples, allowing for real quality control during the digestion process.


The ultraWAVE, which can operate at up to 199 bar pressure and 300°C temperature, can completely digest even the most difficult materials and vast amounts of organics, exceeding any other microwave digesting system. Unlike traditional microwave digestion systems, every sample is directly controlled in terms of temperature and pressure, eliminating the requirement for a reference vessel or indirect controls like infrared temperature sensors.
The ultraWAVE heats up faster, cools down faster (10 minutes from 200°C to room temperature), and can handle more pressure and temperature than any other system. There is no cross contamination among samples in the ultraWAVE. Because less acid is needed and vials have a much smaller surface area, blanks are significantly lower than with traditional microwaves.

Efficient and Cost-Effective


The ultraWAVE is substantially easier to use than any other standard microwave digesting device, dramatically boosting laboratory work flow. From start to end, up to 26 samples can be processed in 45 minutes. It goes without saying that the ultraWAVE sample throughput outperforms all other microwave technologies.
All samples are processed at the same temperature and pressure in a single run, removing the need for repeated digestion cycles for various samples or matrices. The use of disposable glass vials minimises the need for cleaning, boosting ultraWAVE productivity even further.


The ultraWAVE no longer requires the opening and closing of vessels, as well as the installation and disassembly of rotors. The system’s handling is drastically reduced, and time-consuming and tiresome operations are removed.
The technology utilised in all ordinary microwaves causes harsh circumstances in TFM vessels, lowering their lifespan significantly. The ultraWAVE’s SRC technology is designed to help reduce operating expenses by using inexpensive and convenient vials that may be used to determine any metals or trace metals.