National Institute of Technology and

National Institute of Technology and Science U.S. Department of Commerce... 

Analytical balances must be regularly checked against reference weights provided by the US National Institute of Technology and Standards (the old National Bureau of Standards). Other countries have similar calibration services. Some balances have an internal calibration standard, which periodically resets crucial software parameters that control the front-panel display. 

Many species of Monascus fungi are readily available to the public from several institutes having culture collections such as the American Type Culture Center (ATCC) in the United States, the National Institute of Technology and Evaluation Biological Resource Center (NBRC) in Japan, and the Food Industry Research and Development Institute in Taiwan assigned with "CCRC" prefix. 

The detailed and updated information is reflected on a website made by two ministries (Health, Labor and Welfare, Environment) and a governmental organization (Incorporated administrative agency National Institute of Technology and Evaluation, NTTE) [9]. The website is called Japan CHEmicals Collaborative Knowledge Database (J-CHECK) and everyone can refer to the site through the Internet. 

National Institute of Technology and Evaluation. 2007. Japan Chemical Industry... 

Chemical Risk Information Platform Biodegradation and Bioconcentration, 1,4-Butanediol, 110-63-4, National Institute of Technology and Evaluation, Tokyo, Japan, 2002. 

H. Kita, NITE (National Institute of Technology and Evaluation), Life and Welfare Technology Center T. Kuriyama, M. Mizoguchi, Yamagata University... 

For an introduction to current research in alkali-atom BEC see tire special issue on BEC in the Journal of Research of the National Institute of Standards and Technology ... 

WebBook National Institute of Standards and Technology thermochem., spectra numeric 22 300 substances online http //ivebboo- ik.nist.gov... 

Analysis sheet for Simulated Rainwater (SRM 2694a). Adapted from NIST Special Publication 250 Standard Reference Materials Catalog 1995-96, p. 54 U.S. Department of Commerce, Technology Administration, National Institute of Standards and Technology. 

The accuracy of a spectrophotometer can be checked by measuring absorbances for a series of standard dichromate solutions that can be obtained in sealed cuvettes from the National institute of Standards and Technology. Absorbances are measured at 257 nm and compared with the accepted values. The results obtained when testing a newly purchased spectrophotometer are shown here. Determine if the tested spectrophotometer is accurate at a = 0.05. 

Calibrating the electrode presents a third complication since a standard with an accurately known activity for H+ needs to be used. Unfortunately, it is not possible to calculate rigorously the activity of a single ion. For this reason pH electrodes are calibrated using a standard buffer whose composition is chosen such that the defined pH is as close as possible to that given by equation 11.18. Table 11.6 gives pH values for several primary standard buffer solutions accepted by the National Institute of Standards and Technology. 

Analysis of Standards The analysis of a standard containing a known concentration of analyte also can be used to monitor a system s state of statistical control. Ideally, a standard reference material (SRM) should be used, provided that the matrix of the SRM is similar to that of the samples being analyzed. A variety of appropriate SRMs are available from the National Institute of Standards and Technology (NIST). If a suitable SRM is not available, then an independently prepared synthetic sample can be used if it is prepared from reagents of known purity. At a minimum, a standardization of the method is verified by periodically analyzing one of the calibration standards. In all cases, the analyte s experimentally determined concentration in the standard must fall within predetermined limits if the system is to be considered under statistical control. 

PEROXIDES AND PEROXIDE COMPOUNDS - INORGANIC PEROXIDES] (Vol 18) The national institute of standards and technology... 

Handbook 44, Specifications, Tolerances, and Other Technical Requirements Tor Weighing and Measuring Devices, National Institute of Standards and Technology, Gaithersburg, Md., 1996. 

There are no estabHshed specifications for the standard reference samples used in general chemical analysis. Many such substances, however, are analyzed and certified by the National Institute of Standards and Technology (NIST), formerly the National Bureau of Standards (NBS). Specific reference standards are required for many of the analyses included in the USP and NE standards for dmgs. 

National Institute of Standards and Technology (NIST). The NIST is the source of many of the standards used in chemical and physical analyses in the United States and throughout the world. The standards prepared and distributed by the NIST are used to caUbrate measurement systems and to provide a central basis for uniformity and accuracy of measurement. At present, over 1200 Standard Reference Materials (SRMs) are available and are described by the NIST (15). Included are many steels, nonferrous alloys, high purity metals, primary standards for use in volumetric analysis, microchemical standards, clinical laboratory standards, biological material certified for trace elements, environmental standards, trace element standards, ion-activity standards (for pH and ion-selective electrodes), freezing and melting point standards, colorimetry standards, optical standards, radioactivity standards, particle-size standards, and density standards. Certificates are issued with the standard reference materials showing values for the parameters that have been determined. 

Research sponsored by BFRIP regarding the use of brominated flame retardants shows that there is no evidence that the use of decabromodiphenyl oxide leads to any unusual risk. In addition, a study by the National Bureau of Standards (now National Institute of Science and Technology) showed that the use of flame retardants significantly decreased the ha2ards associated with burning of common materials under reaUstic fire conditions (73). Work ia Japan confirms this finding (74). 

Y. C. Wu, W. E. Koch, and R. A. Durst, Standardisation of pH Measurements, National Bureau of Standards Special PubHcation 260-53, U.S. Government Printing Office, Washington, D.C., 1988 National Institute of Standards and Technology, Gaithersburg, Md., private communication, 1993. 

JANAE U.S. Department of Commerce National Institute of Standards and Technology chemical thermodynamic properties of inorganic substances and of organic substances containing only one or two carbon atoms... 

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