Barbara J Guise

Barbara J. Guise serves as a Purchasing Agent for the National Institute of Standards and Technology (NIST), where she plays a critical role in executing procurement strategies that support the agency’s mission to advance measurement science, standards, and technological innovation. She manages a diverse portfolio of acquisitions focused on scientific instrumentation, technical consulting, and specialized laboratory services essential to NIST’s research and development activities. Her work ensures timely access to mission-critical resources that underpin national priorities in semiconductor technology, advanced manufacturing, and precision metrology, aligning procurement decisions with federal acquisition regulations and NIST’s strategic objectives. Barbara maintains consistent working relationships with a select group of specialized vendors, including Quality Biological, Inc., ADVANCED TECHNOLOGIES AND LABORATORIES (ATL) INTERNATIONAL, INC., and PHYSICAL ELECTRONICS USA, INC. These partnerships reflect a preference for contractors with deep technical expertise in analytical instrumentation, calibration services, and scientific support systems. Her procurement approach emphasizes reliability, technical compliance, and long-term vendor collaboration, often prioritizing suppliers with proven experience in high-precision, low-volume scientific and engineering environments. Her contracting patterns show a strong emphasis on open competition, with 81.7% of awards issued without set-asides, reflecting the specialized nature of NIST’s requirements. However, she actively supports small business participation, with 18.4% of awards designated as Total Small Business Set-Asides under FAR 19.5, demonstrating a balanced commitment to both technical excellence and socioeconomic goals. Barbara’s primary procurement focus lies in NAICS codes 811219 (Medical and Diagnostic Laboratory Services), 541690 (Other Scientific and Technical Consulting Services), and 541519 (Other Computer-Related Services), indicating a strong alignment with laboratory support, applied research consulting, and specialized IT solutions. She routinely procures services related to calibration, metrology software, analytical equipment maintenance, and technical staffing—critical to sustaining NIST’s world-class scientific infrastructure.