A 4 K helium-flow, sample-in-vacuum cryostat system with a narrow rectangular tail, designed for optical microscopy.

•  3.2 K - 500 K temperature range

• Quick cool-down time and low helium consumption

• Short working distance

• 3.2 K - 500 K temperature range. May be extended down to 2.2 K when used with a rotary pump (not supplied as standard)
• Cooling to 4.2 K in around 10 minutes
• Low liquid helium consumption, <0.45 L/h when used with a low-loss transfer siphon
• Compact and lightweight, just 1.5 kg
• Short working distance, less than 3 mm
• Superb optical access, up to 110 degrees in reflectance in two orthogonal directions
• Measurement-ready, via 10-pin electrical wiring to the sample

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