Parameter:
A multiuse instrument: 3 different modes of action include direct ultrasonic, opening microwave and cooperative mode
Microwave power: 10-800W (adjustable); microwave frequency: 2450MHz
Ultrasonic power/ frequency: 50W/ 40KHz
Microwave action mode: nonburst continuous microwave heating
Ultrasonic action mode: small power ultrasonic transducer directly connect to reactor, low noise, acoustic vibration (energy) efficiency close to 100%
Microwave power control mode: time control, temperature control and constant power control
Temperature control: non-contact infrared temperature measurement, in the range of room temperature to 120℃(±1℃).
Program control: 9 programs can be set. Each program can be set 9 steps, each step may preinstall parameters such as time (1-999s), microwave power, working temperature, action mode control and ultrasonic (on/off).All the parameters are saved by computer, set, modified and called when needed.
Reactor monitor: real-time video monitor sample reaction state by 4” LCD
Reactor volume: 100mL, 250mL, 500mL (reactor of special specification can be made according to user’s needs)
Power source: 220V±10%, 50Hz
Input power: 1360W
Furnace chamber volume: 27 L
Exterior size: 430mm*512mm*510mm
Weight: 25Kg
Description:
The ultrasonic and microwave assistive technology is now widely used in the process of analytical chemistry sample pretreatment (digestion, extraction, etc.) and chemosynthesis, the devices or instruments about this assistive technology also are with a large quantity.
At present, the ultrasonic extraction instrument’s wide use in the lab makes the ultrasonic produced by transducer transfer and act on the sample through medium (water usually), which is an indirect action mode and the acoustic vibration strength is low, to improve the extraction rate, we have to increase the power of ultrasonic generator (≥300W). But large ultrasonic power will make annoying noise.
Microwave assistive technology is to make use of the theory that under the action of microwave electromagnetic field, the molecule’s motion state in the target object changes from thermal motion to quickly alignment with the microwave alternating electromagnetic field, this change transforms the microwave energy to the sample’s internal energy, which accelerated the process that the target object’s solid phase dissolve into the solution phase. The existing microwave digestion or extraction instruments include two patterns: high pressure sealing and normal pressure opening, each one has its own advantage and deficiency. For example, when the sample treatment is processed in sealing extraction reactor, as the high temperature and pressure, the manufacturing materials of the sample vessel requires high strength, sealing and aging resistance, it may also cause change or destruction of the organic components structure of the sample. Besides, the sample treatment capacity is small (about 0.5-5g), a long period of time is needed for cooling and decreasing the pressure after treatment. Comparatively, low temperature normal pressure opening microwave technology does not have high requirement of the material of sample vessel, the treatment capacity also greatly increases, but the treat time is longer and the efficiency decreases.
To overcome the deficiency of above kinds of sample ultrasonic or microwave assistive technology, attempt in combing ultrasonic with microwave was taken, making full use of ultrasonic vibration cavitational effect and microwave’s high energy effect, a new idea of ultrasonic-microwave cooperative sample pretreatment in low temperature and normal pressure is firstly put forward, and a MW-ER-01 ultrasonic-microwave cooperative extractor/reactor is successfully developed.
This instrument ingeniously puts the sample reactor which fixes on an ultrasonic transducer (50W) into an adjustable power microwave radiation cavity, by a series of electronic auto control technology, achieves three different modes of action: direct ultrasonic, opening microwave and cooperative mode.
Capability Feature:
A multiuse instrument: three action modes including ultrasonic, microwave and cooperative mode are provided in a real multi-use instrument; best choice for the methods and mechanism research of chemical reaction, chemical synthesis, material preparation, chemical sample pretreatment, etc.
Efficient ultrasonic oscillations: ultrasonic oscillations energy directly act on sample reactor, high acoustic vibration efficiency, low energy consumption, low noise; design of acoustic vibration and wireless, more convenient to put in and take out sample reactor.
A large treatment capacity: up to 500mL, greatly increase analysis sensitivity; meanwhile, reactor of different shape and volume can be made according to user’s needs;
Operation is intuitionistic and convenient: microwave power and action time are adjustable, ultrasonic and microwave action mode and its degree may combine and set freely. Reaction condition and temperature are real-time monitored;
Multiple power control mode: time control, temperature control and firm power control make it possible for the operator to choose according to different sample system, analysis task and reaction type;
Condition of low temperature and normal pressure: reduces the destruction of the sample’s organic structure;
Safe and reliable: condition of low temperature and normal pressure, no need to process or buy reactor made by special material, the operation will be safer. Direct ultrasonic vibration has a higher efficiency and lower noise. Microwave leakage is less than 0.3mW/cm2 (national standard is 5 mW/cm2);
Wide application: widely used in sample pretreatment of organic, inorganic and biology analysis. Especially as a new reactor, it can widely used in university or scientific research unit for them to carry out many significative research operations about chemical reaction, organic synthesis, sample digestion or extraction;
Unique patent technology: 3 patent technology is used for the instrument (ZL 2004 2 0114391.1; ZL 2004 2 0014392.6; ZL 2004 0114393.0)
