400-8866-090
test philosophy:
The supercritical fluid has the diffusivity similar to gas and the solubility of liquid, and at the same time has the characteristics of low viscosity and low surface tension, which enables the supercritical fluid to quickly penetrate into the micropores. As a result, the rate of extraction/drying is faster and more efficient than liquids, and in particular the dissolution capacity can vary with temperature, pressure and polarity。
Traditional drying method, liquid directly converted into gas under high temperature conditions, which will produce a certain amount of surface tension changes, will be likely to destroy the fine structure of the sample, for special samples, such as sol-gel, biological samples, porous materials with unstable structure, the use of traditional drying methods to pretreat the sample will lead to the damage of the sample structure. In the critical point drying method, the medium adopts the phase transition method of liquid carbon dioxide -- supercritical carbon dioxide -- gas carbon dioxide, and the surface stress of the interface will be zero, so the fine structure of the sample can be preserved。
Specification :
Warm aerogel sample to dry
Large volume design, multi-layer structure or multi-sample mechanism, can be tailored to the user;
Special high pressure sample tank design
Vertical sample chamber with top fill and bottom drain to facilitate media discharge, top sapphire window design is optional;
Automatic Temperature Compensation
You only need to select the cooling or heating mode, and the automatic temperature control module with PID algorithm will automatically control the temperature within the specified range;
High pressure design
The normal working pressure of the instrument is 0-10MPa, and the design system can withstand more than 15MPa to ensure safety and reliability。
Security Design
The instrument is equipped with automatic overpressure relief system to ensure pressure control。
Precise flow control
Precise control of LCO2 flow with graduated micro-metering valves;
Temperature and pressure control
Automatic control of temperature and pressure, and maintain pressure stability;
High pressure sample cell with window
The sample room is equipped with viewing Windows and lighting to facilitate the observation of liquid filling;
filter system
Complete filtration system to protect samples and valves;
bag rack
A variety of sample holders are suitable for materials with different characteristics;
Chassis design
All lines and valves are made of stainless steel and are suitable for carbon dioxide and ethanol;
Integrated electric kettle cover lifting system, easy to operate, save manpower;
Sturdy, corrosion-resistant housing with displays of power, heating, cooling, pressure, etc。
Superior Characteristic:
1、Designed for aerogel drying, integrated integration, small footprint, saving laboratory space;
2、The overall design is simple and practical, greatly reducing the required operation and greatly reducing the difficulty of operation;
3、The use of more precise and exquisite valves and pipelines, under the premise of ensuring pressure resistance, improve the accuracy of pressure and flow;
4、Accurate control of intake and exhaust speeds to prevent gel sample damage is important for research samples;
5、Special CO2 high pressure pump, with constant current and constant pressure mode, small size, low noise, suitable for laboratory users;
6、The extraction kettle volume can be selectively wide, 3L-30L optional, support customization;
7、The separation kettle has a window to observe the change of the amount of extract obtained in different time periods;
8、Carbon dioxide recycling, saving the cost of use, low carbon environmental protection。
With standard accessory:
ü Flexible high-pressure LCO2 line, 1.5 m, connecting cylinders to instruments;
ü External filter (filtration accuracy: 0.5um), supporting high pressure hose;
ü Sample holder for aerogel samples;
ü 2 anti-static emptying pipelines, each 1.5 meters;
ü Spare sealing ring for drying kettle and separation kettle(10);
ü Installation tool set;
ü User manual and user guide;
ü One year warranty and free technical support for life。
Users need to equip:
40LCylinders filled with carbon dioxide;