Illinois Turf Pesticide Practice Test 2026 - Free Turf Pesticide Practice Questions and Study Guide

Measuring how much liquid moves through a nozzle per unit time is about flow rate. A flow meter is designed to quantify that flow, giving a volume-per-time reading such as gallons per minute. This is essential for sprayers to ensure the correct application rate. A volume gauge shows how much liquid is present or has accumulated, not the rate of flow. A flow sensor might detect flow but isn’t necessarily a calibrated flow-rate measurement, and a rate meter isn't a standard term for this purpose. Therefore, the device you’d use is a flow meter.