Transient hot wire liquid thermal conductivity meter to support material compatibility and property testing for explosive materials.

NASA’s Marshall Space Flight Center requires a transient hot‑wire liquid thermal conductivity meter (Thermtest THW‑L1S) to characterize thermal properties of low‑toxicity monopropellants and phase‑change materials. The agency will issue a sole‑source contract to Thermtest Inc. Vendors are asked only to submit capability statements by the response deadline; price quotes will not be evaluated. The instrument must measure thermal conductivity, diffusivity, and volumetric specific heat over –50 °C to 200 °C, be compatible with ASC‑EN‑T wetted surfaces, and integrate with an external chiller/heater. Work will be performed in Lab 105E, Building 4205 at MS‑F, Huntsville, AL, starting winter 2026. • Required measurements: thermal conductivity, diffusivity, specific heat of liquids/PCMs. • Performance specs: –50 °C to 200 °C range, fast cycle, wide viscosity handling, ASC‑EN‑T wetted surfaces. • Procurement: sole‑source to Thermtest Inc.; NASA seeks only capability statements (no price quotes).