Oxford Instruments Demonstrate the Capabilities of Paragraf Graphene Hall Effect Sensors Under Extreme Conditions Tests show accurate operation can be sustained at mK temperature levels while simultaneously exposed to ultra-strong magnetic fields. 12 May 2021, Cambridge, UK: Paragraf continues to push performance boundaries with its graphene Hall Effect sensors. Oxford Instruments, a leading provider of high technology tools and systems for research and industry, have employed a modified version of the Paragraf GHS09CC sensor device to carry out measurements at temperatures and magnetic field strengths far beyond the scope of any other sensing solution. The test set-up saw the modified Paragraf GHS09CC device exposed to a 14T magnetic field. This was applied via an Oxford Instruments’ superconducting solenoid magnet. The temperature level was taken down below 100mK, using the newly released Proteox dilution refrigerator.