Core components
A standard laboratory-grade microwave extractor usually consists of the following key parts
Microwave Generator (Magnetron)
Function: The "heart" of the machine, responsible for generating microwave energy.
Features: Typically operates at a frequency of 2450 MHz, a frequency that is efficiently absorbed by polar molecules (such as water).
Microwave Cavity
Function: A metal-sealed chamber that holds the sample and reflects microwaves, ensuring that the microwave energy is evenly distributed and safely contained within the system.
Extraction Vessel/Reaction Vessel
Function: This vessel holds the sample and extraction solvent and is the core location for the chemical reaction.
Material: Must be made of chemically inert materials that are resistant to high pressure, high temperatures, and microwave-transparent, such as Teflon (PFA) or quartz glass.
Design: Typically sealed and able to withstand internal pressure generated by heating.
Basic workflow
Sample Preparation
Add the crushed sample and an appropriate amount of solvent to the extraction vessel and seal.
Loading the Machine
Place the extraction vessel symmetrically on the turntable inside the microwave chamber (symmetrical placement ensures a uniform microwave field).
Programming
Set the desired parameters, such as temperature, pressure, power, and time, on the control panel.
Start the Run
Close the door and start the program. The instrument automatically runs, monitoring and adjusting conditions in real time.
Cooling and Removal
After the program ends, the machine automatically cools down. Once the temperature and pressure drop to a safe range, remove the extraction vessel.
Collection and Processing
Open the vessel and filter or centrifuge the extract for subsequent analysis (such as HPLC, GC-MS, etc.).
Contact now
Key Features and Benefits
Highly Automated
Heating, temperature control, and cooling are all automated, reducing human error.
Excellent Repeatability
Precise temperature and pressure control ensures highly consistent results from experiment to experiment.
High Safety
Comprehensive safety features minimize the risks of high temperature and high pressure.
In summary
The microwave extraction machine is a modern, automated intelligent equipment that combines microwave technology with traditional extraction principles. It greatly improves the laboratory's sample pre-processing capabilities and efficiency.
