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Chemistry Portal - Overview

From the food we eat and the pharmaceuticals doctors prescribe to the paints and fuel additives we use, the National Institute of Standards and Technology (NIST) develops the technology, measurement methods, and standards to address the needs of the chemical industry.

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Programs and Projects

The NIST Thermodynamic Metrology Group maintains and develops national standards of humidity (in the range 1 nmol/mol to 0.6 mol/mol of water … more


The NIST Thermodynamic Metrology Group maintains and develops national standards of temperature (in the range 0.65 K to 1235 K), and supports … more

Acoustic Thermometry

By measuring the speed of sound in argon gas, we have determined thermodynamic temperature with unprecedented accuracy in the range 0 °C to 552 … more

Atomic Standard for Pressure

NIST scientists are developing a highly accurate primary standard for pressure in the range 2 MPa to 7 MPa based on fundamental physical … more

Hybrid Humidity Generator

NIST's new primary standard humidity generator, the Hybrid Humidity Generator (HHG), replaces the NIST 2-Pressure Humidity Generator, Mark 2 … more

Johnson Noise Thermometry

Johnson noise thermometry (JNT) is a primary temperature measurement technique based on the fundamental properties of thermal fluctuations in … more

Standard Reference Photometer

The Standard Reference Photometer (SRP) Program began in the early 1980s as collaboration between NIST and the U.S. Environmental Protection … more

Continuous-wave terahertz spectrometer

The continuous-wave terahertz spectrometer makes use of two near-infrared lasers. The first laser is a fixed-frequency cw ring Ti:Saph laser … more

Laboratory Equipment - X-Ray Residual Stress

Location: E137 The diffractometer is part of the Residual Stress Program with the main purpose of measuring strains/stresses. Other possible … more

Laboratory Equipment - X-Ray Reflectometer

Location: E137 The NCNR x-ray diffractometer is configured to allow both ?/2? diffraction and reflectometry. Typically Cu radiation is used with … more

Laboratory Equipment - Milli-Q Water System

Location: E134 Please refer to the manufacturer's website for more information. more

LFPF Software

The Logistic Function Profile Fitting program, LFPF , is based on a Fortran program written for DOS and originally issued under the name LOGIT. … more

NIST Mass and Fragment Calculator Software

The NIST Mass and Fragment Calculator is a program written in Visual Basic which calculates the mass of an input peptide or protein sequence along … more

jb95 Spectral fitting program

A graphical user interface program, JB95 , based on a Windows 95 © API platform has been written in the C programming language to aid in the … more

Isotope Enrichment Calculator

The NIST Isotope Enrichment Calculator is a program written in Visual Basic which determines the percentage of 15 N enrichment of stable … more

Exercise Control System

The Systems Integration Division's (SID) Manufacturing & Modeling Simulation Group (MSG) worked with San Francisco Communications to support … more


* Download Expect source from SourceForge * Download Expect binaries from ActiveState * Expect Homepage Expect is a tool for automating … more

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