GF40 and GF80 thermal mass flow controllers (MFCs) from Brooks Instrument provide outstanding performance, reliability and flexibility in many gas flow measurement and control applications, according to the manufacturer. The Brooks GF40/GF80 offers a highly configurable platform based on modular architecture, enabling drop-in replacement for quick and easy upgrades. These MFCs give users an opportunity to standardize on one MFC over a broad range of applications providing reduced inventory and operational costs. The GF40/GF80 MFCs operate with Brooks’ patented MultiFlo™ technology enables superior actual process gas accuracy. MultiFlo also gives users the ability to reconfigure the MFC for a new gas and range without the time and cost of removing the device from the gas line. The MFCs are also equipped with an independent diagnostic/service port to troubleshoot or change flow conditions without removing the MFC from service.