The manufacturer of the Eppendorf Mastercycler Nexus X2e Thermal Cycleris Eppendorf. The Mastercycler® nexus X2 is Eppendorf's solution for busy PCR labs. Two totally independent protocols can be run on the two blocks, so two PCR users can independently start and end their PCR reactions whenever they want. One of the assays can even have up to 64 samples. With less than 40 dB[a] noise emission, the nexus PCR cycler is whisper quiet and also very energy efficient. The product is located in Woonsocket, RI, USA.