What flow measurement unit is typically used for non-hydrocarbon streams?

The typical flow measurement unit used for non-hydrocarbon streams is gallons per minute (gpm). This unit is most commonly applied in a variety of contexts such as water measurements, liquid chemical flows, and other aqueous solutions, which are often measured in terms of volumetric flow rates.

Using gallons per minute is advantageous for environments where fluids are at room temperature and pressure, and where precise measurements are necessary for applications such as water treatment, industrial processes, or agricultural irrigation. While other units like pounds per hour or standard cubic feet per minute can also measure flow rates, gpm is specifically suited for situations where the fluid in question is not a hydrocarbon.

In summary, gallons per minute is the appropriate choice because it is widely recognized and utilized for measuring non-hydrocarbon streams, catering to the specific needs of those applications.