Regulators are used to ensure you receive the required flow of calibration gas for your application. Based on the cost-efficient design of its diffusion based gas detectors, MSA is able to use 0.25 lpm regulators. This save users money by delivering calibration test gas at a low rate of 0.25 lpm versus 0, 50 lpm which is the market standard. For pumped instruments, the easy to use Gas Miser Demand Regulator is recommended which delivers the required gas flow rate automatically.