Transmission Electron Microscope

The National Institutes of Health (NIH) is seeking a transmission electron microscope for negative-stain grids screening. The microscope must have specific features such as a 120 kV transmission electron microscope, a GUI based on Windows 11, and a user logon with a lock-out mechanism. The microscope must also have a seamless magnification series, a 4-position motorized aperture control, and a software-based solution to control microscope parameters. The selected vendor will be required to provide on-site applications training and a 3-year warranty. The contract will be a firm fixed-price purchase order, with payments due 30% upon receipt of order, 60% upon delivery, and 10% upon acceptance. • The microscope must be parfocal, with focus not changing with a change in magnification. • The microscope must have an image orientation system (IOS) that allows for rotation of the image ±90º degrees in increments of 15º or less. • The microscope must have a function where the brightness on the detector is kept constant when changing magnification. • The microscope must come with a 2k x 2k scientific CMOS-type camera and be fully integrated in the microscope’s control software. • The microscope must have exchangeable polepieces, i.e. a High Contrast (HC) or High Resolution (HR) model. • The microscope must have an anti-contaminator device, or cryo-shield, to protect cryo-EM specimens from ice contamination.