The Aqua Troll 600 multiparameter sonde with field access through the VuSitu mobile app for Android devices from In-Situ features a quick-read LCD status screen for visual indicators of overall readiness, battery life, internal log and sensor status, as well as integrated Bluetooth connection for wireless data access. The multiparameter sonde has a sub 2-inch passive and active antifouling system for all sensors, including conductivity. 800/446-7488; www.in-situ.com.