Agar Scientific specialises in offering and producing a wide range of specimens specifically for TEM calibration where quantification or high resolution results are required. We endeavour to maintain the highest possible preparation standards in their production and where possible, we offer specimens that are certified. Agar Scientific calibration specimens for TEM are renown worldwide for their quality and reliability and each one is checked in an electron microscope. Specimens are rejected for exceeding 5% broken grid squares, for excessive dirt, or for inadequate image quality. These criteria govern every Agar calibration specimen. All specimens are prepared on standard 3.05mm copper grids.
Diffraction Grating ReplicasShadow cast carbon replicas of diffraction line gratings.Average lead time: 1 to 24 daysPOA
Average lead time: 1 to 24 days- Mag*I*Cal calibration standard AGS1936Using this standard, the three major instrument calibrations: magnification, camera constant for indexing diffraction patterns and image/diffraction pattern rotation, can all be carried out using a single specimen.In Stock
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In Stock - Perforated Carbon Film, 3.05mm grid AGS100
This specimen is one of the quickest and easiest to use for performance checks since it gives information about nearly all causes of loss of resolution. Special prices valid while stocks last.In StockPOA
In Stock 
High Resolution Test Specimen - Gold Particles on Carbon Film AGS132An arrangement of finely dispersed thin gold particles has an advantage over single crystal gold foil for tests of high resolution imaging capabilities in TEM.In StockPOA
In Stock
Ferritin, 3.05mm grid AGS126Ferritin molecules display a quad structure with a separation of 1.25 nm, which is useful as a resolution check.In StockPOA
In Stock
Evaporated platinum / iridium, 3.05mm grid AGS114The evaporated platinum/iridium specimen is supplied on a perforated carbon support film that provides holes for ease of focus and astigmatism correction.In StockPOA
In Stock
Combined test specimen, 3.05mm grid AGS142A perforated carbon film is shadowed with gold and graphitised carbon particles are deposited.Average lead time: 22 daysPOA
Average lead time: 22 days
Standard for HVEM AGS155Normal resolution test specimens are difficult to see on the viewing screen because of low contrast.In StockPOA
In Stock
Camera Length Calibration SpecimensThe very small crystallite size of these evaporated films of Aluminium makes them ideal for calibrating the camera length of an Electron Microscope.Average lead time: 1 dayPOA
Average lead time: 1 day
In Stock
Polystyrene latex particlesShadowed latex particles provide dense markers and small metal aggregates may be found at the edges of the metal shadowing for particle separation resolution checks.Average lead time: 1 to 22 daysPOA
Average lead time: 1 to 22 days
Polystyrene Latex ParticlesThis range of polystyrene particles is excellent for SEM calibration purposes.Average lead time: 1 to 22 daysPOA
Average lead time: 1 to 22 days
Polystyrene latex spheresThis range of polystyrene latex spheres can be used for either SEM or TEM applications.Average lead time: 1 to 24 daysPOA
Average lead time: 1 to 24 days
Gold shadowed latex particles AGS128BThese are latex particles of 0.196µm diameter shadowed with a fairly heavy coating of gold.In StockPOA
In Stock- Nanosphere Size StandardsHighly uniform polystyrene spheres with a density of 1.05g/cm3 and refractive index of 1.59 @ 589nm wavelength. Special prices valid while stocks last.Average lead time: 1 to 39 days
POA
Average lead time: 1 to 39 days
