Making NO measurements in biological tissues
Tom McKarns • June 21, 2019
NO levels can be determined by looking at nitrites and nitrates
Nitric Oxide is a key molecule in biological systems, critical to vasodilation in humans, to maintain proper blood pressure. By converting nitrates and nitrites using a chemical reaction to liberate NO, we can quantify their levels with chemiluminescence.

ECO PHYSICS recently visited the NASA Glenn Research Center in Cleveland, Ohio. Glenn is NASA’s only research center in the Midwest, officially named after John Glenn in March 1999. This site was established in 1941 and was incorporated into NASA in 1958. It is NASA’s third oldest research center. The purpose of the facility has evolved over the years, it was originally for aircraft propulsion studies and now it creates advanced technology for aviation and space exploration. Their facilities currently include wind tunnels, drop towers, vacuum chambers, and a research aircraft hangar. We were fortunate enough to see some of these and take some photos during our installation and training visit. Glenn is involved with many important projects, such as the International Space Station and the Artemis Program, which is NASA’s latest plan to return to the Moon. We hope to be involved in more of the great work and research that NASA Glenn will do in the future. Thank you to Krystal and Dawn for their time.