Our new heat exchanger enables flexibility to meet a wide range of technical demands. Due to microtechnologic structures it achieves an excellent thermal transmittance value and a high out-put in heat transfer. The new micro heat exchanger is resistant to temperatures of 500 C and above whilst withstanding high pressure. It is designed and operated as a direct flow, counter flow or cross flow heat exchanger. In cases of extreme exothermic reactions it is advantageous to use it as a chemical mixer.