CAS DataLoggers introduces OdaLog portable gas data loggers, from Thermo Fisher Scientific, for wastewater odor and hydrogen sulfide control. OdaLog instruments are used extensively in the wastewater industry to record the level of hydrogen sulfide and other gas emissions in pumping stations, manholes and sewer lines. The loggers are designed to survive the humid and corrosive conditions found in these areas while recording ppm gas levels. OdaLog provides the latest sensor technology and weatherproof seals to prevent damage. All three OdaLog models now include Bluetooth communications and are supported with the OdaStat software, an easy-to-use application for configuring the devices and downloading stored data. 800-956-4437; www.dataloggerinc.com/products/odalog.