Trace Oxygen SensorG1100 trace oxygen sensor uses Luminescent Dissolved Oxygen (LDO) technology to provide a detection limit of 0.01 ppb and measures DO in the range of 0 ppb to 20,000 ppb. Applications in the power plant water and steam cycles include monitoring the stator coolant, condensate, deaerator and feedwater for corrosion control. Hach; 800/227-4224; www.hach.com/power