The K850 Critical Point Dryer - with built in thermoelectronic heating & adiabatic cooling
An explanation of the critical point dryingprocess
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The K850 Critical Point Dryer combines versatility and ease of operation. The vertical pressure chamber (32mm diameter. x 47mm high) chamber is optimised for minimum CO2 usage. A side viewing port gives a good view of the liquid meniscus during filling. The K850 is fitted with thermo-electronic heating and adiabatic cooling and temperature control of +5°C cooling and +35°C during heating. This ensures 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 - essential for optimum sample
preservation.
A built in magnetic stirrer ensures thorough mixing of samples with circulating fluids. The standard specimen
holder has 12 wells (8mm diameter x 8mm high) and is mount on a compact, two level holder
For very small specimens CPD800A porous pots are available (see options).
Each K850 critical point dryer is pressure tested and carries an appropriate certificate. To ensure safety a
bursting disc is fitted.
Specimen Holders
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| The compact two-level holder allows easy specimen exchange and transfer to and from the K850 | |
| CPD800A porous specimen pots porous specimen pots with lids made of solvent resistant plastic: 12.7mm x 15.7mm (pack of ten). One packet is supplied with the K850 |  |
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Sample Holder Options EK4140 TEM grid holder EK4135 Glass microscope slide holder EK4150 Holder for bulk samples (a single large sample container) B5222 Standard 12 sample holder (included with K850) CPD800A Porous specimen pots (one packet is supplied with the K850) |
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Key Features
Features & Benefits
- Vertical chamber with top filling and bottom draining - ensures specimens do not become uncovered during drying
- Side viewing port - great visibility
- Adiabatic cooling and thermoelectric heating - accurate temperature control
- Fine control needle valve pressure let down - precise control of decompression and 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 need to open and close
- Safe operation – every K850 critical point dryer is pressure tested to 2,500psi and a pressure certificate issued. The K850 is fitted with a safety bursting disc
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