Frozen Human Serum

Amendment I - The purpose of amendment I is to respond to an industry inquiry.

Question: The description states crimp vials with 4 different color crimp seals. We do not use crimp seals much anymore and I’m not even sure we can get them in 4 different colors. Are screw cap vials acceptable?

Response: No, screw cap vials are not acceptable.

All other terms and conditions remain unchanged, as a result of this amendment.

COMBINED SYNOPSIS/SOLICITATION 1333ND25QNB640292

SRM 972b Vitamin D Metabolites in Frozen Human Serum

This is a combined synopsis/solicitation for commercial items prepared in accordance with the

format in FAR Subpart 12.6- Streamlined Procedures for Evaluation and Solicitation for Commercial

Items, as supplemented with additional information included in this notice. This announcement

constitutes the only solicitation; quotations are being requested, and a separate written

solicitation document will not be issued. This solicitation is being issued under the authority of

FAR Part 13, Simplified Acquisition Procedures.

This solicitation is a Request for Quotation (RFQ). The solicitation document and incorporated

provisions and clauses are those in effect through the Federal Acquisition Circular (FAC) 2025-04

effective 6/11/2025.

The associated North American Industrial Classification System (NAICS) code for this procurement is

325414, with a small business size of 1,250 employees. This acquisition will use Small Business

Set-Aside procedures.

The National Institute of Standards & Technologies Organic Chemical Metrology Group requires Frozen

Human Serum Standard Reference Material (SRM) 972b, in accordance with the attached

Statement of Requirements.