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Notice ID Number 1333ND-26-01019 Title: Sources Sought Notice for an Ozone Exposure Chamber Department of Commerce -NIST Purchase Request Number: NB731070-26-01019 The purpose of this sources sought notice is to conduct market research and identify potential sources of commercial products/services that satisfy the Government's anticipated needs. NIST encourages responses from all capable sources, including small businesses, to inform acquisition strategy and promote competition. NAICS Code: 334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables BACKGROUND The National Institute of Standards and Technology (NIST), Engineering Laboratory, Materials and Structural Systems Division, Infrastructure Materials Group has a requirement for the following system: The National Institute of Standards and Technology (NIST) Engineering Laboratory (EL) Materials and Structural Systems Division (MSSD) supports basic research and the development of test methods in response to a crisis for homeowners in Northeastern Connecticut, where residential foundations have crumbled and cracked because of the inclusion of aggregate containing the mineral pyrrhotite. The damage occurs over a period of years, limiting researchers' ability to study the phenomenon in the lab. Currently proposed methods to accelerate the oxidation process at the heart of the problem are ineffectual or have secondary effects that complicate the analysis of results. MSSD is studying the use of ozone exposure as an effective accelerator that introduces fewer complicating factors. Preliminary small-scale experiments showed promising results but were limited by the range of achievable ozone concentrations in the equipment used, the inability to continuously expose the sample to ozone, and the size of the sample chamber. A dedicated ozone exposure chamber is required to meet milestones and goals. The MSSD will benefit from this purchase of a dedicated ozone exposure chamber capable of a large range in ozone concentrations (0 - 1000 ppm), as it will allow for testing of aggregate samples for reactivity, evaluation of aggregate-concrete reactions, and investigation of potential mitigation strategies. This work is necessary to develop effective test methods and produce data on the reactions that can be used to inform improved industry concrete practices. Each of these goals cannot be met without this purchase. Specifications: The respondent shall deliver (1) one, 'Ozone Exposure Chamber which fulfills the minimum specification/requirements provided herein, and shall be delivered to the NIST Gaithersburg campus. MINIMUM REQUIREMENTS The respondent shall provide a system/product that meets all technical specifications identified below. All items must be new. The use of “gray market” components are not authorized for sale in the U.S. by the Contractor is not acceptable. All line items shall be shipped in the original manufactu…

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