Used PHILIPS / FEI Quanta 250 FEG #9408073 for sale

PHILIPS / FEI Quanta 250 FEG is a state-of-the-art field emission scanning electron microscope (FESEM) equipped with a cold-field emission gun (FEG). It is used for the analysis of biological and material samples at nanometer resolution levels. The microscope is based on the latest generation of patented cold-field emission guns (FEG), which provide a very stable beam of electrons. This allows for higher resolution imaging and greater depth of field in the image. Additionally, this FEG electron source allows for both high resolution imaging, as well as very low accelerating voltage operation, allowing delicate samples to be imaged without damage. FEI Quanta 250 FEG is equipped with a standard electron lens system with both electrostatic and magnetic lenses. These field emission lenses have higher resolution than previous generations of traditional thermionic electron microscopes and allow for imaging at extremely high magnifications (up to 300,000x). In addition, the lens system operates in either monochromatic mode or color mode, allowing images to be taken in a variety of colors. The microscope is also equipped with an automatic sample stage for samples up to 8mm in size. With this sample stage, scan settings such as scan area, resolution, and scan speed can be easily selected and adjusted for each sample. Additionally, two EDS detectors are included for X-Ray spectroscopy analysis. PHILIPS Quanta 250 FEG is capable of high resolution in its imaging with a maximum resolution of 0.2 nm in low accelerating voltage mode, with a maximum working distance of 20mm. It also allows for a wide range of imaging modes including secondary electron imaging (SEI), backscattered electron imaging (BEI), transmitted electron imaging (TEI), and scanning auger microscopy (SAM) imaging. In conclusion, Quanta 250 FEG is a top-of-the-line field emission scanning electron microscope allowing for high resolution imaging, reliable field emission electron source, automated sample stage, and a wide range of imaging modes. With its cutting edge technology, it is an excellent tool for researchers in materials and biology.