Used GATAN 691 #293806903 for sale

GATAN 691 is a high performance ion milling equipment specifically designed to machine thin and fragile materials such as those used for transmission electron microscopy (TEM). This system integrates several technologies such as digital ion column technology, a variety of automatic protocols, and dual substrate support. The main components of 691 unit are the ion milling source, milling chamber, and sample chamber. The ion milling source consists of a Micromasch gas injector, a magnetron sputtering gun, and an electron gun. The chamber includes a pressure regulator to control the air-driven ion current, a specially designed vacuum chamber to maintain a low pressure environment, and a machine of scanners to accurately control the orientation of the ion beams. The sample chamber is equipped with a special heating element to ensure uniform heating of the sample. GATAN 691 is equipped with a digital ion column that is capable of controlling the depth to which the ions penetrate the sample. This enables the operator to precisely control the milling parameters. The tool can also be used to automatically homogenize the sample by applying an externally generated negative ion waveform. 691 is also capable of processing multiple substrates at the same time, thanks to its dual substrate support. This feature significantly reduces the time it takes to mill samples, making the process more efficient. Lastly, GATAN 691 comes with a variety of automatic protocols that allow the user to quickly process the samples without having to manually set all the parameters. These protocols can be used to mill any kind of material, and are especially useful when preparing thin specimens. In conclusion, 691 is an extremely versatile ion milling asset that can help speed up the process of preparing thin specimens for TEM imaging. With its advanced technologies, dual substrate support, and array of automatic protocols, it is an ideal tool for producing thin, even, and homogeneous specimens with minimal effort.