Metric practice guide

Metric Practice Guide ASTM Bulletin E380-19, American Society for Testing and Materials, Philadelphia, Pa., 1979. 

ASTM, Metric Practice Guide, ASTM Publ. E 380-72, Philadelphia, 1973. 

ASTM Standard E380, Metric Practice Guide, provides a description of the International System of Units and deals with the conversion of quantities expressed in various systems of measurement to SI units. It includes a list of references to many primary sources of information on the International System of Units. 

The present edition of this handbook reflects the changes in abbreviations, symbols, and forms that are resulting from the efforts to reduce the diversity of practices from one specialty to another and from one nation to another. Recommendations of the International Organization for Standardization (ISO-R 1000) and of the Metric Practice Guide, adopted by ASTM, NBS, APL, and others, have focused attention on the diversity of so-called standards. 

In presenting data in international standard metric units throughout this edition, the practices and forms used in the Metric Practice Guide have been carefully followed. Certain conventions used in the Metric Practice Guide are not consistent with those originally adopted for this handbook, nor with ANSI standards. Special attention is directed to the following conventions ... 

The SI units have been adopted as an American National Standard by the American National Standards Institute (ANSI) in a booklet designated ANSI-IEEE Std. SI 10-1997, Inter-national System of Units (SI) The Modern Metric System [4]. The SI units were adopted by Canada in the Weights and Measures Act of 1971 and published as a national standard in CAN/CSA Z234.1-89, Canadian Metric Practice Guide [5]. 

Unless otherwise stated, gauge pressure is indicated by the abbreviations psig whereas absolute pressure is indicated by the abbreviations psia. kPa shall indicate gauge pressure unless otherwise noted, as (kPa, abs) for absolute pressure and (kPa, differential) for differential pressure. All kPa values are rounded off per CGA P-11, Metric Practice Guide for the Compressed Gas Industry [3]. 

CGA P-11, Metric Practice Guide for the Compressed Gas Industry, 1 ed.. Compressed Gas Association, Inc., 1725 Jefferson Davis Highway, Arlington, VA 22202. 

CAN/CSA Z234.1-89, Canadian Metric Practice Guide, Canadian Standards Association, 178 Rexdale Blvd., Etobicoke, Ontario, Canada M9W 1R3. 

P-11 Metric Practice Guide for the Compressed Gas Industry. Guide sets forth guidelines concerning units that are to be used to express (1) the volume and/or mass of gas in compressed gas containers, (2) pressure, and (3) container water capacities. It includes volume, pressure, mass, and other conversion factors pertinent to the compressed gas industry (6 pages). 

The values are expressed in the International System of Units (SI), the modem metric system, described in National Bureau of Standards Special Publication 330, 1981 edition, and in American Society for Testing and Materials Metric Practice Guide E380-85. 

Refs. [i] The National Institute of Standards and Technology (NIST) Reference on Constants, Units, and Uncertainties (2003), http //physics.nist.gov/cuu/constants [ii] Mills I (2004) Chemistry International (IUPAC) 26(3) 17 [iii] Mills I, Cvitas T, Homann K, Kallay N, Kuchitsu K (eds) (1993) IUPAC quantities, units and symbols in physical chemistry. Blackwell, Oxford, p 58 [iv] Cardarelli F (1997) Scientific unit conversion. A practical guide to metrication. Springer, London... 

Ref. [i] Cardarelli F (1997) Scientific unit conversion. A practical guide to metrication. Springer, London... 

HOW GREEN IS MY PROCESS A PRACTICAL GUIDE TO GREEN METRICS... 

How Green Is My Process A Practical Guide to Green Metrics... 

The following tables give conversion factors from various units ofmeasure to SI units. It is reproduced from NIST Special Publication 811, guide for the use of the International System of units (Superintendent of Documents, US government Printing Office, 1991), which in turn was derived from IEEE Std 268-1982, IEEE Standard Metric Practice 1982 by the Institute of Electrical and Electronics Engineers Inc.). 

Cardarelli, F. (1999) Scientific Unit Conversion Practical Guide to Metrication, 2nd ed. Springer, Berlin Heidelberg New York. 

Scientific Unit Conversion A Practical Guide to Metrication Springer, London, Heidelberg (1997), xvi, 456 pages ISBN 978-3-540-76022-1 (Out of print)... 

R.A. Nelson, Guide for Metric Practice, Physics Today 50 (8) (1997) Part 2, BG13. 

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