Critical Point Driers

Model K850

The K850 combines versatility and ease of operation. Built-in thermo-electric heating and adiabatic cooling allow precise temperature control. The vertical pressure chamber (32mm diameter x 47mm) has a side viewing port, which allows a clear view of the liquid meniscus during filling.

Key Features

• Vertical chamber with top filling and bottom draining
• Side viewing port - offers good visibility
• Built-in adiabatic cooling and thermoelectric heating - accurate temperature control
• Fine control needle valve pressure let down - precise control of decompression avoids potential damage to specimens by uncontrolled pressure release
• Built-in magnetic stirrer- enhanced solvent exchange
• Temperature monitoring and control with thermal cut-out protection
• Pressure monitoring with safety cut-out for over pressure
• Easy to operate valves - light finger pressure only is needed to open and close
• Safe operation - every K850 Critical Point Dryer is pressure tested to 2,500psi, fitted with a safety bursting disc and issued with a pressure certificate
• Three-year warranty

Product Description

The K850 is fitted with thermo-electronic heating and adiabatic cooling and temperature control of +5°C cooling and +35°C during heating. This allows pre-cooling of the chamber and ensures that the critical point is accurately obtained.

The K850 is fitted with three valves: fluid inlet, flushing and a gas venting system which uses a fine needle valve to give controlled pressure let down. A built-in magnetic stirrer ensures thorough mixing of specimens with circulating fluids.

The standard specimen holder has 12 individual wells (8mm diameter x 8mm high) and allows easy exchange and transfer to and from the K850. For very small specimens CPD800A porous pots are available.

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Specifications of the K850 CPD

• Instrument Case: 450mm W x 350mm D x 175mm H
• Weight: 12Kg
• Specimen Chamber: 32mm Dia x 47mm High Internal (Tested to 3000 psi)
• Temperature Gauge: 0 - 120^oC
• Thermal Cut-Out: 40^oC
• Pressure Gauge: 0 - 3000 psi
• Pressure Safety Cut Out: At 1700 psi
• Cooling/Heating: +5^oC to +35^oC
• 4 x On/Off Valves: Cool/Fill/Out/Bleed
• 1 x Needle Valve Letdown: Fine Bleed - (In Series With Bleed)
• Includes:: 1 x Specimen Holder Stainless Steel (12 compartments 8mm x 8mm) -10 x PTFE Pourous Specimen Pots (18mm x 14mm Pack 10)
• NOTE: Flow Guage Monitor option fitted externally in series with fine bleed.(0-2.2L/Min - CP03266-18)
• Services
• CO₂: gas cylinder (local supply) high pressure hose for direct connection (included with Instrument)
• Electrical Supply: 230 Volts 50Hz (3 Amp max.)

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