1. Microwave power supply would be automatically adjusted based on pressure and temperature inside closed vessel, which provides non-pulse consistent microwave power. This advanced technique (patented) would make the digestion and extraction process much safer and easier to control.  
 
2. Three programmable modes for Temperature, Pressure and Extraction control would make the process fit for any official standards including EPA and ASTM. Two pages Crisp Monitor to display both reaction data (pressure, temperature, time, microwave power and working steps, etc.) and accumulating curves oftemperature and pressure inside reaction vessel. 
 
3. Touchless Pressure Monitor and Control (Patented): Closely monitor and control the pressure inside reaction vessel, no cable or rope is necessary. Easy to install and release closed vessel. Cooling process can be executed outside oven, speedy and efficient.  
 
4. Pt Temperature Monitor and Control (Patented): Directly plug in to get the temperature inside closed vessel, touchless to sample. Easy to plug in and out. Stable shielded sensor for safety and reliability. Display temperature and pressure within the same vessel for valuable comparison.