The Department of Health and Human Services, specifically the National Institutes of Health (NIH), is seeking a contractor to provide preventative maintenance for the Rees Centron Environmental Monitoring System. The procurement involves a fixed-price service agreement that includes annual maintenance, calibration of sensors, and the supply of necessary parts and batteries, ensuring the system's functionality for monitoring critical environmental conditions in research laboratories. This system is vital for safeguarding sensitive biological materials across 17 laboratories, and the contract will be awarded on a sole-source basis to Rees Scientific USA, the sole manufacturer of the system. Interested vendors must submit their quotations by July 24, 2025, to Tina Robinson at robinsti@mail.nih.gov, referencing solicitation number 75N94025Q00132.