the right shows their Model 202 Ozone Monitor and their Personal Ozone Monitor (POM) sitting atop a conventional ozone monitor. Their Model 202 was originally developed out of the need for the University of Colorado research group of co-founder Dr. John Birks to make vertical profiling measurements of ozone on kites and balloons where measurements using conventional ozone monitors are impossible. The POM represents another advance in miniaturization and portability. Their small, lightweight, low-power instruments are now used for atmospheric measurements using balloons, kites, UAVs, research aircraft, and at many remote sites, including Antarctica, the Galapagos Islands, the Greenland ice sheet, the summit of Mont Blanc, the Amazon rain forest, on buoys in the Arctic Ocean, on commercial airliners, in many U.S. National Parks and at numerous other locations throughout the world. More than 1,700 of Their Model 202 and Model 205 Ozone Monitors, over 140 POMs, and more than 4,100 total instruments have been sold since the year 2000, with about half of their instruments going to researchers outside the U.S. More than 500 scientific papers have been published that cite use of 2B Tech instruments, and those papers have been cited more than 7,000 times by other researchers.