Amendment 002.docx

This is an Amendment to a Request for Quote (RFQ) issued by the National Institute of Standards and Technology (NIST) under the Department of Commerce providing Government responses to contractor questions regarding the Ultrapure Water System procurement (Solicitation Number 1333ND26QNB030146).

The amendment addresses two closely related questions regarding water volume requirements and usage expectations for the ultrapure water system. The Government clarified that the primary performance specification is defined in the Statement of Work, Line Item 0001, Section A, Technical Specifications, item d, which mandates a sustained dispense rate exceeding 1.5 liters per minute at a pressure range of 30 psi to 70 psi for up to 8 hours continuously (with booster pump support acceptable). This specification translates to peak consumption of approximately 90 liters per hour or 720 liters over an 8-hour workday; however, the Government notes this peak loading is not expected daily and average consumption will be substantially lower. The ultrapure water system must continuously maintain output water pressure within the specified 30-70 psi range to ensure proper downstream instrumentation operation. This amendment was issued on April 7, 2026, following an extension of the RFQ submission deadline from April 6, 2026 to April 10, 2026 to allow time for question responses.