Profile: Advanced Sensor Technologies, Inc. is a provider of sensors. Our ion selective sensors include complete line of solid state membrane ion selective membranes and it is available in immersion and twist lock configurations. Our twist lock receptacles sensors are suitable for ion selective measurements requiring periodic calibrations. Our valve retractable sensors with blow-out protection is suitable for ball valve assemblies or compression fittings. Our brands include Iotron™ and Iotrode™.