Installed in February 2008, the FEI Vitrobot™ Mark IV is a fully automated vitrification robot for plunge-freezing of aqueous (colloidal) samples.
This next-generation includes a newly designed touch-screen user interface and an automated transfer from the vitrication medium into the liquid nitrogen atmosphere which allows for even more consistent and high-yield sample output.

All essential vitrification parameters, such as temperature, relative humidity, the pressure and quantity of blottings, and drain time can be programmed for each individual application and set for automatic retrieval.

Operating parameters:
• Working temperature 4 - 60°C (at an ambient temperature range between 18 - 25°C)
• Peltier controlled heating/cooling
• Relative humidity ambient humidity - 100% (no condensation at an RH < 85%)
• Ultrasonic controlled humidification