The GPI FM-300H Digital Chemical Meter is designed for use with most herbicides and other chemicals compatible with meter materials. This chemical meter measures flow rates from 2-20 GPM (7-76 L/min). The FM-300H mounts easily on hose end, pump, or fluid transfer system, and features an electronic display that keeps batch and cumulative totals. This meter meets ISO 22241-2 Annex C, D, E, F, G, H, I, Diesel Exhaust Fluid (DEF)/Adblue standards.