Adsistor Technology Inc.

Adsistor Technology, Inc. is a manufacturer of gas and vapor detection sensors headquartered in Seattle, Washington. Founded in 1982 by Patrick Dolan, the company specializes in adsorption-sensitive resistor (Adsistor) technology, where conductive micro-particles form an electrical circuit whose resistance increases proportionally to VOC vapor concentration through Van der Waals adsorption forces. Their product line includes gasoline and petroleum vapor sensors designed for underground storage tank (UST) monitoring and site remediation, the White Dot FVIR sensor replacement for water heater flammable vapor ignition resistant systems, the Corrosion Canary corrosion detection sensor, and the Life-Gard Mobile marine gasoline fume detection system, a battery-powered bilge fume detector with iOS Bluetooth connectivity. Adsistor reports over 25,000 UST sensor installations across North and South America and Europe, over 65,000 marine fume detection installations, and field-proven lifespans exceeding 20 years. Their sensor technology is intrinsically safe with no heated components, resistant to humidity and condensing atmospheres, and the marine sensor element carries a lifetime guarantee. The company also serves military airborne vehicle applications. For water and wastewater utilities, Adsistor's petroleum vapor sensors are applicable for monitoring underground storage tanks and remediation sites near water infrastructure.