National Physical Laboratory

The most satisfactory and the most accurate method for the calibration of a thermometer is to compare it directly with short-scale thermometers, each of limited range, which have been standardised at the National Physical Laboratory.f The comparison should be made as far as possible under the same conditions as the thermometer is to be used. For experiments demanding the highest precision e.g., in research work), it is a good plan to have two similar sets of short-scale thermometers, one of which has been standardised at the N.P.L. the unstandardised set is... 

K. W. Reynard, ed.. Inventory ofiMaterials Designation Systems, Versailles Advanced Materials and Standards, TWA-10, National Physical Laboratory, Teddington, U.K., 1992. 

J. Aveston, G. A. Cooper, and A. Kelly, ia The Properties of Fiber Composites, IPC Science Technology Press, The National Physical Laboratory, 1971, pp. 15-26. 

D. Reichenberg, Report 38, Division of Chemical Standards, National Physics Laboratory, UK, Aug. 1975. 

Compiled from Daubert, T. E., R. P. Danner, H. M. Sibul, and C. C. Stebbins, DIPPR Data Compilation of Pure Compound Properties, Project 801 Sponsor Release, July, 1993, Design Institute for Physical Property Data, AlChE, New York, NY and from Ambrose, D. Vapour-Liquid Critical Properties , Report Chem 107, National Physical Laboratory, Teddiugtou, UK, October, 1979. 

Other early tabulations of numerical data were the French Tables Annuelles de Constantes et Donnees Numeriques which appeared for some decades after 1920, and the British Tables of Physical and Chemical Constants, masterminded by the National Physical Laboratory and known affectionately as Kaye and Laby after the editors, which appeared annually in single volume form from 1911 to 1966. These last two, like Landolt-Bdrnstein, appeared regularly, in successive editions. 

For details of MTDATA, contact the National Physical Laboratory (NPL)... 

Taqi, E. A. and Cottis, R. A., The influence of crevice chemistry on hydrogen uptake by structural steels , in Turnbull, A. (ed.). Corrosion Chemistry within Pits, Crevices and Cracks, National Physical Laboratory, London (1984)... 

Division of Materials Applications, National Physical Laboratory... 

Effect on corrosion fatigue The combination of corrosion and fatigue can cause rapid failure, and a coating of nickel, by preventing corrosion, can increase the life of the parts. Figure 13.10 shows results obtained by the National Physical Laboratory on mild steel Wohler specimens sprayed with... 

The kind of short-range order that exists in solid Au-Ni solutions has been called into question by A. Munster and K. Sagel (National Physical Laboratory Symposium, Tcddington, to be published). These authors find negative short-range order, in direct opposition to ref. 10 (see p. 126). At present writing, the situation is not clarified. 

Oriani, R. A., Proc. National Physical Laboratory Symposium, Ted-dington, 1958, in press. 

National Physical Laboratory, Modern Computing Methods, 2nd Ed., Her Majesty s Stationery Office, London, 1961. 

Hickman, M, J. Measurement of Humidity, 4th edit (National Physical Laboratory. Notes on Applied Science No. 4). (HMSO, 1970). 

Lockett, F.J., National Physical Laboratory report no. 25, Division of materials apphcations, Teddington,... 

Workers in other Government Research Stations and the Universities who have collaborated with us are R. P. Miller, D. Clinton, Dr T. I. Barry, Dr I. Seed (National Physical Laboratory) K. E. Fletcher (Buildings Research Station) Miss D. Poynter (Warren Spring Laboratory) Professor L. Holliday, Dr J. H. Elliott, Dr P. R. Hornsby, Dr K. A. Hodd, Dr A. L. Reader (Brunei University) R. Mansion, Dr B. F. Sanson, Dr W. M. Allen, P. J. Gleed (Institute for Research on Animal Diseases) Professor Braden (London Hospital) A. C. Shorthall (Birmingham University), I. M. Brook (University of Sheffield) and R. Billington (Institute of Dental Surgery, London). 

In the United Kingdom chemical RMs were first produced some time in the late 1960 s at the National Physical Laboratory (NPL) Division of Chemical Standards at Teddington. This Division was transferred to the Laboratory of the Government Chemist LGC in November 1978. Early work was based on the development of highly... 

National Physical Laboratory, UK National Research Coimcil Canada Chinese National Research Center for CRM NIST Traceable RM... 

PPDS (Physical Property Data Service) was originally developed in the United Kingdom by the Institution of Chemical Engineers and the National Physical Laboratory. It is now available as a Microsoft Windows version from NEL, a division of the TUV Sudde-untschland Group (www.nel.uk). PPDS is made available to universities at a discount. 

The degradation of composites has been reviewed by Bank and co-workers [1] and in the work at the National Physical Laboratory (see Section 12.11). Apart from the special circumstances of damage accumulation in fatigue, the models are the same as those applying to plastics in general. 

P. Tomlins, Code of practice for the measurement and analysis of creep in plastics, National Physical Laboratory, Teddington, NPL MMS 002, 1996. 

The National Physical Laboratory (NPL) publish a number of reports on the durability of composites (www.npl.co.uk) and a database of environmental stress cracking data [17]. 

In a similar manner, the calibration of glassware, such as volumetric flasks, pipettes, burettes, measuring cylindres are duly carried out by specific methods recommended by Indian Standards Institution (ISI), British Standards Institution (BSI), National Physical Laboratory (NPL), United States Pharmacopoeia (USP) at specified temperatures (See Chapter 2). 

Note (1) The National Physical Laboratory (NPL) describes a method of reading meniscus in graduated glassware, viz., a dark horizontal line on a white background is placed 1 mm below the meniscus. A slight adjustment of the position of the dark line causes the meniscus to stand out sharply against the white background,... 

Wormald, C.J., "Thermodynamic Properties of Some Mixtures Containing Steam." Paper presented at National Physical Laboratory Conference on Chemical Thermodynamic Data on Fluids and Fluid Mixtures, Tedding ton, Middlesex, U.K., September 11-12, 1978. Conference Proceedings published by IPC Science and Technology Press. 

Another continuing project on aqueous nonelectrolytes is the International Data Series B. The editor is Dr. J. A. Larkin of the National Physical Laboratory in England. It is published in the form of supplements of loose-leaf sheets and issued at irregular intervals of a few months. Each sheet is prepared and submitted by an author or authors. The data are presented in a standard format and must follow certain rules with regard to kind of properties, style, units, and kind of auxiliary information to be included. Standard table formats have been designed for each kind of property included. Each table is reviewed by an editor specially selected from an international panel. 

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