For decades, the Acoustic Doppler Velocimeter (ADV®) has been the preferred instrument for precisely-defined sampling of water velocity across a wide range of environments. The FlowTracker2 Lab ADV utilizes SonTek’s continuing innovation in ADV platforms to offer a laboratory version of the world’s best-selling ADV, the FlowTracker2. For the first time, the ADV’s acoustic probe and processing electronics are housed in one small, lightweight, easily-maneuverable unit, and the acoustic head has an optional, integrated pressure (depth) sensor. For decades, the Acoustic Doppler Velocimeter (ADV®) has been the preferred instrument for precisely-defined sampling of water velocity across a wide range of environments. The FlowTracker2 Lab ADV utilizes SonTek’s continuing innovation in ADV platforms to offer a laboratory version of the world’s best-selling ADV, the FlowTracker2. For the first time, the ADV’s acoustic probe and processing electronics are housed in one small, lightweight, easily-maneuverable unit, and the acoustic head has an optional, integrated pressure (depth) sensor. The SonTek ADV is a longtime standard for accurate, high-precision water velocity measurements under a wide variety of flow conditions and research settings.