Experts in photoionization detection (PID) technology, ION Science manufacture and supply more PID sensors than any other gas detection company in the world. Our PID sensor is used by major, global gas detection manufacturers and found within most PID instrumentation available today for the detection of volatile organic compounds (VOCs). Renowned for its outstanding humidity resistant performance and anti-contamination design, ION Science patented PID sensor technology gives results you can trust in the most extreme conditions. Look no further for accurate, reliable, trusted PID technology from the global PID experts.