Advanced Sensor Technology, Inc. specializes in manufacturing custom-built industrial pH sensors, ORP sensors, Ion Selective (ISE) Sensors, Conductivity Sensors, and Dissolved Oxygen (DO) Sensors for inline process control measurement, wastewater treatment, and environmental monitoring applications. They offer a range of sensors with unique features and options, including solid-state industrial pH sensor and ORP sensor designs, rugged sensors that can operate in extreme temperature and pressure conditions, and sensors resistant to various chemicals and gases. The company provides extensive customization options for their sensors to meet specific application requirements, ensuring the best possible choice of sensor model and options at a cost-effective price point.