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Freeze Dryers for Sample Preparation

Freeze drying specimen preparation for transmission electron microscopy (TEM) and scanning electron microscopy (SEM) is a well-established practice. It reduces the distortion and shrinkage effects that occur when a wet specimen dries by normal evaporation, as the method involves careful sublimation of frozen specimens under vacuum.

The K750X Freeze Dryer uses peltier cooling and operates under rotary-pumped vacuum. For more demanding applications, the K775X Freeze Dryer is cooled by liquid nitrogen and uses turbomolecular pumping.

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K750X Peltier-Cooled EM Freeze Dryer

The K750X EM Freeze Dryer operates at rotary pump vacuum using a ‘Peltier’ thermoelectric stage. This means drying temperatures of down to -60°C can be achieved, enabling careful sublimation of frozen specimens under vacuum.

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K775X Liquid Nitrogen Cooled Turbo-Pumped EM Freeze Dryer

The K775X can operate at temperatures down to -140°C and uses a turbomolecular pumping unit, backed by a rotary vacuum pump. Programmable, multi-segment sequence control ensures versatile automatic operation.

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