Scanning electron microscopes

Buying guide

Resolution and the electron source settle most scanning electron microscope purchases before anything else enters the picture. A tungsten filament column resolves fine structure adequately for routine survey work and quality control, while a field emission gun reaches the single-digit nanometre range needed for nanomaterials, semiconductor review and detailed cell-surface imaging. The source also dictates running cost and uptime: tungsten filaments are cheap and replaceable, field emission tips last longer but demand a cleaner vacuum and a larger initial outlay. A buyer who knows the smallest feature they must resolve has already narrowed the field to a handful of configurations.

From there the chamber and the detector set decide what the instrument can actually do with a sample. Secondary electron detection gives topography; a backscatter detector reads atomic-number contrast; an energy-dispersive X-ray spectrometer adds elemental analysis, and on the second-hand market an EDS add-on raises the price sharply. Chamber size matters as much as optics for anyone imaging whole components rather than mounted stubs, and variable-pressure or environmental modes let a buyer skip the conductive coating step that standard high-vacuum imaging requires on non-conductive specimens.

A used column carries risks that no datasheet lists, so verification on these instruments is heavier than on most laboratory equipment. Ask for recent images taken at stated magnification, confirm the state of the electron gun and the vacuum pumps, and establish whether the detectors still function and whether the control software runs on a supported operating system. Column alignment, stage travel and chamber vacuum integrity are the components that cost the most to restore, and an instrument that has sat idle often needs recommissioning before it images at all.

Price tracks these variables rather than age. What a basic tungsten unit costs sits well below what a field emission system with full analytical capability commands, and the catalogue range reflects that spread: listings run from EUR 7 to EUR 116.619, with an average around EUR 4.312. Among the brands present, Wesemann, Agilent, Ohaus, Hitachi, Waters occupy different parts of that band, from column makers to the analytical houses that supply detectors and accessories. For a laboratory on a defined budget, a refurbished unit listed for sale is more affordable than new, though the deciding question remains which configuration the work demands, not which price point the buyer would prefer. Warranty on any given instrument is arranged in consultation for that specific listing.

Types of Scanning electron microscopes

Which equipment types appear under scanning electron microscopes?

Among the listings that specify a type, the mix is broader than the category name alone suggests. The scanning electron microscope itself is present, alongside analytical balances and semi-micro balances, laboratory scales, and the ancillary items a microscopy suite needs, laboratory furniture and storage cabinets. analytical balance, semi-micro balance, laboratory furniture, laboratory scale, storage cabinet, scanning electron microscope describe the sample, because precise weighing underpins any quantitative electron microscopy workflow: a semi-micro balance resolves to a hundredth of a milligram, a step finer than a standard analytical balance, which matters when sample mass feeds into compositional or density work. Gravimetric analysis sits behind much of this instrumentation, and the furniture and cabinets exist because an electron column needs a vibration-stable bench and secure, dust-free storage for stubs, coaters and spare detectors.

The work these instruments do in biotechnology and life sciences

Scanning electron microscopy serves cell imaging and structural biology directly, mapping cell surfaces, tissue architecture and the morphology of microorganisms at resolutions optical methods cannot reach. In microbiology it resolves bacterial and viral structure, and in molecular biology and genomics it supports the characterisation of nanoparticle carriers used in delivery and assay work. The scanning electron microscope for life sciences research is a recognised tool for examining biomaterials, scaffolds in tissue engineering, and the surface of cells fixed for high-resolution study. Balances in this group are also used for protein purification and reagent preparation, where gravimetric accuracy governs every downstream result in proteomics and immunoassay development.

The brands behind the scanning electron microscope listings

The sellers here, Wesemann, Agilent, Ohaus, Hitachi, Waters, span column manufacturers and the analytical houses that supply detectors, balances and consumables. Hitachi appears as a maker of electron columns, while Agilent and Waters bring the analytical instrumentation that often shares a laboratory with microscopy. Ohaus and Wesemann cover weighing and laboratory fittings respectively. For a buyer, a well-represented brand means parts are easier to source via Questpair and models are simpler to compare across listings; it also tends to mean a deeper used market, which widens the choice at any given price point.

What a used scanning electron microscope costs here

The catalogue holds 112 used and 30 new listings, so 79 percent of the listings are used. Prices run from EUR 7 to EUR 116.619. That spread covers everything from a single detector or stub holder at the low end to a complete field emission column with analytical capability at the top, which is why the average of EUR 4.312 says less about a typical instrument than the configuration does. Used and refurbished units are listed below new prices, and where a buyer weighs the two, warranty is arranged in consultation for the specific listing.