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Documentary standards

Documentary Standards can specify definition of terms; classifications of components; delineation of procedures; specification of dimensions, materials, processes, products, systems, services or practices; test methods and sampling procedures; or descriptions of fit and measurements of size or strength. Under the National Technology Transfer and Advancement Act (NTTAA), NIST is assigned responsibility to coordinate federal, state, and local documentary standards and conformity assessment activities.

 

News and Updates

Projects and Programs

Hardness Standardization

Our objective is to standardize and improve hardness measurement both in the U.S. and internationally. NIST is the U.S. National Metrology Institute (NMI) for

New Standardization of Ra-228

Measurements of radium isotopes in the naturally-occurring radioactive decay chains (i.e., 235U, 238U, and 232Th) are exceedingly important for various

Publications

Software

Simulation Models for NS-2

A simulation platform based on NS-2 as been developed in order to leverage publicly available modules for several wireless and wired technologies.

Tools and Instruments

Cabinet x-ray system

The Smiths Detection 6046si cabinet x-ray system was designed for security screening of bags, parcels and other objects of similar size. The system runs at 160

X-ray Backscatter Systems

X-ray backscatter systems are used for the screening of personnel for hidden weapons and other contraband. Unlike conventional radiographic x-ray systems

Awards