Profile: McMillan Company specializes in the design and manufacture of precise gas and liquid flow sensors, meters, & controllers. The products target the lower flow applications. Most of the liquid applications are for flow rates no higher than 50 liters/minute(about 13 GPM), and the gas products fill applications for flows no higher than 500 liters/minute(about 16 SCFM). We measure liquid flow rates as low as 13 mL/minute & gas flow ranges as low as 0-20 SCCM.