NASA's National Aeronautics and Space Administration (NASA) is planning to issue a sole source contract for the procurement of Kintek Gas Calibration Modules, specifically from KIN-TEK Analytical, Inc., due to their unique compatibility with existing hardware at the Marshall Space Flight Center. The modules are essential for generating humidified NIST certified gas standards at parts per billion (ppb) concentrations, which are critical for accurate monitoring in testing chambers related to trace contaminant control for life support systems in space exploration. This procurement underscores the importance of maintaining optimal performance and reliability in analytical chemistry equipment, ensuring the safety of human spaceflight missions. Interested organizations are invited to submit their capabilities and qualifications by 7 a.m. CST on April 17, 2025, with inquiries directed to Shanna Patterson at shanna.l.patterson@nasa.gov.