Air-liquid interface (ALI) exposure system with installation and training post award and one year of warranty.

The U.S. Army Medical Research Institute of Chemical Defense (USAMRICD) requires the acquisition of a single Air-Liquid Interface (ALI) exposure system, specifically the CelTox Sampler system from MEDTEC BIOLAB, INC., as it is the only system identified to meet all Minimal Essential Characteristics (MEC). This system is designed to deliver precise, controlled exposures of gases, vapors, particulates, and mixed aerosols to human respiratory tissue models including ciliated airway, alveolar, endothelial, and precision-cut lung slices under physiological conditions. The system must support simultaneous exposure of 6 to 24 samples with electrostatic deposition to maximize particle uptake, real-time mass quantification via a quartz crystal microbalance, and integrated temperature and humidity control within a compact footprint suitable for standard fume hoods. It includes a 24-nozzle module, airflow dryer, vacuum pump, mass flow controller, digital in-line sensors, and specialized software capable of logging and exporting deposition data in .csv or .tsv formats. All components must work in concert with various atmosphere generation systems to ensure flexibility and compatibility with diverse experimental protocols, and the system must enable easy cleaning, maintenance, and high reproducibility of results aligned with published scientific standards. Installation, training, and system activation must be completed by 30 September 2026 at the USAMRICD facility in Gunpowder, Maryland, with the contractor responsible for freight, setup, and user training. An optional one-year warranty is available but not mandatory. The procurement is sole-source due to the uniqueness of the CelTox Sampler system, with no competition permitted under the stated MEC requirements. The Defense Health Agency, under the Department of Defense, is the contracting authority located at Fort Detrick, Maryland, and while the contract does not specify pricing, payment terms, invoicing procedures, or detailed packaging, marking, or preservation requirements, acceptance hinges entirely on compliance with the documented MECs. No formal evaluation weights, risk ratings, or socioeconomic set-asides are applied, and no clauses from the Federal Acquisition Regulation are referenced, indicating a streamlined commercial item acquisition process focused on technical adequacy and timely delivery rather than complex contracting provisions.