AST-6 Microwave digester

Product Description:
The high-throughput intelligent microwave digestion system provides a rapid, safe, and automated solution for sample digestion. It accelerates the digestion reaction under high pressure and is widely used in food, environmental protection, disease control, quality supervision, commodity inspection, and scientific research institutions.

Main Features:
The instrument employs non-pulse continuous automatic frequency conversion control of microwaves, extending the instrument’s lifespan and ensuring electromagnetic wave uniformity. The chamber is specially made of 52L large-capacity 316L stainless steel. The self-locking, buffered, explosion-proof furnace door ensures operator safety and structural integrity in case of abnormal reactions. The furnace door and chamber are tightly sealed, and microwave leakage meets national standards. The instrument uses a dual temperature and pressure control system to control the pressure and temperature of the digestion experiment, displaying the results in real time. 360° continuous rotation in the same direction ensures uniform microwave distribution, guaranteeing a consistent microwave environment for all samples and improving the consistency of experimental results. Microwave heating automatically stops when the pressure inside the chamber exceeds the set protection value. The safety explosion-proof membrane has a dual-protection function. When the pressure inside the tank exceeds the membrane’s withstand pressure, the membrane ruptures first, releasing gas and preventing damage to the tank and injury to personnel.

Main unit parameters:
1.1 Power supply: 220-240VAC50/60HZ8A; Microwave frequency: 2450MHZ; Total installed power: 2600W;
(1) Power supply requirements: 220VAC50HZ15A;
(2) Microwave source: Professional microwave source;
(3) Microwave output power: 0~1600W;
(4) Microwave output characteristics: Microwave non-pulse continuous automatic frequency conversion control, 0~100% automatic output;
(5) Microwave uniformity: Vertical bidirectional waveguide design, three-dimensional output technology, matching harmonic power frequency to achieve high field uniformity;
(6) Microwave cavity: 52L, 316 grade all stainless steel cavity, 6 layers of anti-corrosion and high temperature resistant Teflon coating;
(7) Self-locking buffer explosion-proof furnace door, which can automatically release the lateral pressure impact in advance when danger occurs, ensuring the safety of operators. The furnace body is safe and the furnace door structure is intact and undamaged;
(8) Exhaust and cooling system: The furnace cavity is equipped with a high-power exhaust system, allowing various reactions to be carried out continuously for extended periods in a well-ventilated, safe, and easily observable environment. The furnace cavity ventilation uses an acid-resistant, high-volume centrifugal fan with an exhaust volume of not less than 5 m³/min;
The furnace cavity has an air-cooling function, continuously cooling the reaction vessel, with real-time temperature and pressure displays.
(9) Turntable design: 360° continuous reciprocating rotation in the same direction ensures uniform microwave distribution, guaranteeing a consistent microwave environment for all samples and improving the consistency of experimental results.
(10) Control method: Touch screen design, 8-inch TFT-LED (800X480 color) large screen display, long-distance direct reading of reaction process, real-time display of temperature and pressure of sealed reaction vessel, and real-time display of temperature and pressure curves;
(11) Operating language: Simplified Chinese
(12) Automatic protection function: Equipped with a fault self-checking system; when one of the temperature and pressure control systems fails, the instrument will automatically cut off microwave emission and alarm;

Control system parameters:
(1) Temperature control system: Adopts contact temperature control method, accurate and error-free temperature control, using a high-precision platinum resistance temperature sensor; real-time detection, control and display of temperature and curves inside the microwave digestion reaction vessel;
(2) Temperature control range: 0~300℃; Temperature control accuracy: ±0.5℃;
(3) Temperature control capability: Rate control
(4) The main unit has a built-in light recognition system, which can provide feedback on the experimental progress through light changes.

System Parameters:
(1) Temperature Control System: Employs a contact-type temperature control method, ensuring precise and error-free temperature control. Utilizes a high-precision platinum resistance temperature sensor; real-time monitoring, control, and display of the temperature and curves within the microwave digestion reactor.
(2) Temperature Control Range: 0~300℃; Temperature Control Accuracy: ±0.5℃;
(3) Temperature Control Capability: Rate heating function.
(4) Pressure Control System: Employs a non-contact pressure control method, ensuring precise and error-free pressure control. This is a mature pressure control method that has been used for 100 years. Real-time monitoring, control, and display of the pressure and curves within the microwave digestion reactor.
(5) Pressure Control Range: Range: 0~6MPA, 0-10MPA, 0-15MPA, selectable. Pressure control accuracy: 0.01MPA;
(6) Pressure protection: Automatic adjustment/stopping microwave emission and automatic alarm in case of overpressure;

Reaction vessel parameters:
(1) Maximum temperature ≥300℃, maximum pressure ≥1500PSI;
(2) Inner vessel material: PTFE;
(3) Explosion-proof outer tube material: PEEK aerospace material;
(4) Inner vessel reaction volume: 75ML;
(5) High-pressure digestion vessel batch processing capacity ≥6 samples/batch (can be upgraded to 40-position without replacing the rotor);
(6) The explosion-proof diaphragm is pressed with ceramic. Ceramic does not deform when heated, while PTFE deforms when heated and cannot play the role of explosion-proof diaphragm. Ceramic parts are used for pressing.
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AST-6 Microwave digester