Thermo Fisher Scientific (formerly FEI) Quanta 250

FEI Quanta-250 is a versatile Environmental Scanning Electron Microscope (ESEM) designed for high-resolution imaging and analysis of a wide range of samples, including conductive, non-conductive, and hydrated specimens.

Key features include:

• High-resolution imaging: Achieves resolutions up to 1.2 nm at 30 kV in high vacuum mode, enabling detailed surface analysis.
• Environmental mode (ESEM): Allows imaging of wet or non-conductive samples without the need for coating, preserving their natural state.
• Versatile vacuum modes: Operates in high vacuum, low vacuum, and ESEM modes, accommodating various sample types and experimental conditions.
• Advanced detectors: Equipped with secondary electron detectors (SE), backscattered electron detectors (BSE), and energy-dispersive X-ray spectroscopy (EDS) for comprehensive material characterization.
• In-situ capabilities: Features such as a Peltier stage for temperature control and options for in-situ electrical measurements enhance experimental flexibility.

This instrument is widely utilized in fields such as:

• Biotechnology: Essential for imaging biological samples, including cells and tissues, in their native hydrated state, facilitating studies in molecular biology and bioprocessing.
• Materials science: Enables detailed analysis of material microstructures, aiding in the development of advanced materials.
• Nanotechnology: Supports the characterization of nanostructures, crucial for synthetic biology and nanobiotechnology applications.
• Environmental science: Assists in the examination of environmental samples, contributing to research in environmental management and bioremediation.

Commonly found in:

• University laboratories: Supporting academic research and education in various scientific disciplines.
• Biomedical research centres: Facilitating studies in molecular diagnostics and biopharmaceutical development.
• Industrial R&D facilities: Aiding in product development and quality control processes in sectors like biomanufacturing and pharmaceuticals.

First introduced in 2010, the FEI Quanta-250 remains a relevant and widely used tool in scientific research, offering robust performance and adaptability to diverse research needs.