Microwave digestion equipment manufacturer

Intelligent Microwave Digestion Instrument CNWB-4 Fully Automatic Acid Rush InstrumentMain features:

The high-throughput intelligent microwave digestion instrument adopts microwave non pulse continuous automatic frequency conversion control, which extends the service life of the instrument and the uniformity of electromagnetic waves. The chamber adopts a large volume of 52L, specially made of stainless steel chamber material, and a self-locking buffer explosion-proof furnace door. When the reaction is abnormal, the buffer structure ensures the personal safety of the operator and the integrity of the furnace door structure. The furnace door and chamber are tightly combined, and microwave leakage meets national standards. The instrument adopts a temperature and pressure dual control system to control the pressure and temperature of the synthesis experiment, with real-time display, 360 ° continuous rotation, uniform microwave, ensuring the same microwave environment for each sample and improving the consistency of experimental results. When the pressure inside the tank exceeds the set protection value, the microwave will automatically stop heating. The safety explosion-proof membrane has a dual safety function. When the pressure inside the tank exceeds the pressure that the explosion-proof membrane can withstand, the explosion-proof membrane will rupture first, and gas will leak out, preventing damage to the tank body and harm to the human body.

The microwave digestion instrument has overheating phenomenon

Microwave heating can also cause overheating (i.e. higher than the boiling point temperature). When heating in an electric furnace, heat is conducted from the outside to the inside through the vessel wall to the sample. Bubbles are easily formed on the surface of the vessel wall, making it less prone to overheating. The temperature is maintained at the boiling point because gasification absorbs a large amount of heat. In the microwave field, the heating method is different, and the energy is directly converted inside the system. Due to the lack of a "core" for forming gas bubbles inside the system, some low boiling reagents are prone to overheating in a closed container. It can be seen that the reagents in the closed dissolution tank can provide higher temperature, which is beneficial for the digestion of the sample.

What are the things to pay attention to when choosing a microwave digestion instrument

1. Environmental friendliness, safety, and reliability of equipment: Microwave digestion technology is an environmentally friendly sample processing technique that can greatly reduce the use of reagents and has advantages such as safety and reliability. However, it is still important to choose brands and manufacturers that meet relevant national safety standards and have a good user reputation.
2. Laboratory requirements and equipment compatibility: Determine whether the laboratory has sufficient space to install and place microwave digestion equipment. Secondly, the microwave output spectra used by different brands of microwave digestion instruments are not the same. It is necessary to ensure that the instrument can meet the required microwave power in the experiment and avoid instrument specifications that do not match and cannot work properly.
3. Instrument function and configuration: Select the operating frequency, chamber capacity, safety protection device, reagents, etc. of the instrument according to actual needs. Generally speaking, configurations such as high frequency, large chamber, fully protective devices, and high-purity reagents can improve processing efficiency and ensure experimental safety.
4. Technical support and after-sales service: Choose a brand with comprehensive technical support and after-sales service, and be able to solve problems in a timely manner.
5. Cost effectiveness: Choose products with high cost-effectiveness based on budget and demand.

Intelligent Microwave Digestion Instrument CNWB-4 Fully Automatic Acid Rush InstrumentTechnical Specifications:

Host parameters

1.1 Power supply: 220-240 VAC 50/60Hz 15A; Microwave frequency: professional microwave source/2450MHz; Installation power of the whole machine: 2600W;

1.2 Microwave output power: 0~1600W, automatically continuously adjustable;

1.3 Microwave output characteristics: Microwave non pulse continuous automatic frequency conversion control, 0~100%Automatic output;

1.4 Microwave cavity: 52L, all stainless steel cavity, corrosion-resistant, high temperature resistant (optional PTFE coating);

1.5 Self locking buffer explosion-proof furnace door, which can automatically release lateral pressure impact in advance in case of danger, ensuring the personal safety of operators and the integrity of the furnace door structure;

1.6 Exhaust and cooling system: The furnace chamber is equipped with a high-power exhaust system, and various reactions can be carried out continuously for a long time in a ventilated, safe, and easily observable environment; The furnace chamber ventilation adopts acid resistant and high air volume centrifugal fans, with an exhaust air volume of not less than 5m3/min; The furnace chamber has air cooling function, which continuously cools the reaction tank and displays temperature and pressure in real-time.

Control system parameters:

2.1 Control mode: touch screen design, 7-inch large screen display, remote direct reading of reaction process, real-time display of closed reaction tank temperature and pressure, and real-time display of temperature pressure curve;

2.2 Temperature control range: Room temperature -300 ℃; Temperature control accuracy: ± 0.5 ℃;

2.3 Temperature control system: adopting contact temperature control method, precise temperature control, using high-precision platinum resistance temperature sensors; Real time detection, control, and display of temperature and curve inside the microwave digestion reaction tank;

2.4 Pressure control system: adopting non-contact pressure control method, precise pressure control, real-time detection, control and display of pressure inside the microwave digestion reaction tank;

2.5 Rotary table design: 360 ° continuous rotation in the same direction, uniform microwave, ensuring the same microwave environment for each sample and consistency of experimental results.

Reaction tank parameters:

3.1 Ultimate pressure resistance of outer tank: 20MPa;

3.2 Maximum temperature resistance of the inner tank: 300 ℃;

3.3 The outer tank is made of imported PEEK aerospace material, and the inner tank is made of polytetrafluoroethylene material; Inner tank reaction volume: 55ml (standard) and 100ml (optional).