Reference data

News and Updates

Latest Values of Fundamental Constants Published

July 13, 2021

Four scientists from the National Institute of Standards and Technology (NIST) have reported the latest values for the fundamental constants of nature on June

Woman uses gas analysis mass spectrometer at NBS for chemical analysis of gas or vapor mixtures

NIST Adds New 'Fingerprints' to Chemical Identification Database

June 17, 2020

The National Institute of Standards and Technology (NIST) has updated its database of chemical fingerprints, called mass spectra, that are used to identify

MML Releases Updated Phase Equilibria Diagram Database (NIST SRD31)

November 27, 2019

Version 4.4 of Phase Equilibria Diagrams (Standard Reference Database 31) is now available to the research community. The database provides maps of the

Projects and Programs

Trusted AI framework for a new class of Standard Reference Materials and Data with exquisitely characterized uncertainty for billions of properties

A new collaboration between NIST's Human Genomics Team, Mass Spectrometry Data Center, and Information Technology Laboratory to use and develop artificial

Genome in a Bottle

Consortium hosted by NIST and JIMB dedicated to authoritative characterization of benchmark human genomes. Sign up for General GIAB and Analysis Team email

Gas properties for flow metering

Flow meters that rely on measuring the pressure drop across a laminar flow element can be accurately calibrated using a benign surrogate gas (such as helium or

The NIST Chemistry Webbook

The NIST Chemistry WebBook is a site on the Internet (http://webbook.nist.gov/) that provides convenient access to a variety of physical and chemical property

Publications

Performance assessment of DNA sequencing platforms in the ABRF Next-Generation Sequencing Study

September 9, 2021

Author(s)

Justin Zook, Jonathan Foox, Christopher E. Mason

Assessing the reproducibility, accuracy and utility of massively parallel DNA sequencing platforms remains an ongoing challenge. Here the Association of

Ultraviolet Radiation Technologies and Healthcare Associated Infections: Standards and Metrology Needs

August 20, 2021

Author(s)

Dianne L. Poster, C Cameron Miller, Richard Martinello, Norman Horn, Michael T. Postek, Troy Cowan, Yaw S. Obeng, John J. Kasianowicz

The National Institute of Standards and Technology (NIST) hosted an international workshop on ultraviolet-C (UV-C) disinfection technologies on January 14 – 15

CODATA Recommended Values of the Fundamental Physical Constants: 2018

June 30, 2021

Author(s)

Eite Tiesinga, Peter Mohr, David B. Newell, Barry Taylor

We report the 2018 self-consistent values of constants and conversion factors of physics and chemistry recommended by the Committee on Data of the Interna-

Absolute 13C/12C isotope amount ratio for Vienna PeeDee Belemnite from infrared absorption spectroscopy

April 26, 2021

Author(s)

Adam Fleisher, Hongming Yi, Abneesh Srivastava, Oleg Polyansky, Nikolai Zobov, Joseph T. Hodges

Software

ThermoML Opener

February 1, 2017

PurposeA tool for direct viewing of ThermoML files which include data and metadata. ThermoML files conform to the new XML-based ThermoML IUPAC standard