Advanced Instruments Inc is a division of Analytical Industries Inc., is a leading manufacturer of analytical instrumentation specializing in the gas detection measurement of percent, ppm, ppb, and trace levels of oxygen. 

Advanced Instruments oxygen analyzers use their own proprietary oxygen sensors that combines reliability, extended long life and performance which is critical in meeting the need for oxygen measurements imposed by today’s industrial process, natural gas and welding applications.

GPR-1200 Portable PPM Oxygen Analyzer

GPR-1200 Portable PPM Oxygen Analyzer

GPR-18 Hazardous area PPM Oxygen Analyzer (ATEX)