Guaranteed performance  Epsilon 4 is a star-performing benchtop XRF instrument and is well suited for the analysis of additives and wear metals in fresh and unused lubricating oils. The benchtop XRF instrument provides a fast method for the analysis of lubricating oils without the need for sample preparation and use of chemicals. 

Epsilon 4 complies with the latest test method ASTM D7751-15 for the analysis of magnesium, phosphorus, sulfur, chlorine, calcium, zinc and molybdenum in fresh lubricating oil by XRF. 

Calibrated for years  A low-drift X-ray tube and an automatic drift correction system give compliant results for years without the need for re-calibration. This results in a more efficient use of the system and less cost of calibration maintenance. 

Fast and sensitive  Fast measurements are achieved by using the latest silicon drift detector technology that produces significant higher intensities. This allows the Epsilon 4 spectrometer to run at full power and therefore realizes a much higher sample throughput compared to traditional EDXRF benchtop instruments.  Unique detector electronics enable a linear count rate capacity to over 1,500,000 cps (at 50% dead time) and a count rate independent resolution typically better than 135 eV for better separation of analytical lines in the spectrum. 

Reduced helium consumption  The high performance of Epsilon 4 enables many applications to be operated in air atmosphere, without longer overhead time and costs involved for helium or maintenance of vacuum system. When measuring in air, low-energy X-ray photons characteristic of sodium, magnesium and aluminium, are sensitive to variations in air pressure and temperature. Built-in temperature and air-pressure sensors compensate for these environmental variations, ensuring excellent results whatever the weather.