This is a sole-source solicitation by the NICHD for a one-year service agreement for a specific JEOL electron microscope and its accessories, intending to award the contract exclusively to JEOL USA Inc. The period of performance is from June 24, 2026, through June 23, 2027. The justification for a sole-source award is that JEOL USA is the sole factory-authorized service provider, possesses proprietary documentation, and only its trained engineers are permitted to perform the required maintenance to preserve warranties. The service includes routine maintenance, unlimited emergency visits with guaranteed response times, telephone support, and replacement parts. All responsible sources may submit a quotation for consideration.