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TOC
Preface
1 Introduction
1.1 Purpose of Guide
1.2 Outline of Guide
2 NIST policy on the Use of the SI
2.1 Essential data
2.1.1 Tables and graphs
2.2 Descriptive information
3 Other Sources of Information on the SI
3.1 Publications
3.2 Fundamental Constants Data Center
3.3 Metric Program
4 The Three Classes of SI Units and the SI Prefixes
4.1 SI base units
4.2 SI derived units
4.2.1 SI derived units with special names and symbols
4.2.1.1 Degree Celsius
4.2.2 Use of SI derived units with special names and symbols
4.3 SI supplementary units
4.4 Decimal multiples and submultiples of SI units: SI prefixes
5 Units Outside the SI
5.1 Units accepted for use with the SI
5.1.1 Hour, degree, liter, and the like
5.1.2 Neper, bel, shannon, and the like
5.1.3 Electronvolt and unified atomic mass unit
5.1.4 Natural and atomic units
5.2 Units temporarily accepted for use with the SI
5.3 Units not accepted for use with the SI
5.3.1 CGS units
5.3.2 Other unacceptable units
5.4 The terms ‘‘units of the SI’’ and ‘‘acceptable units’’
6 Rules and Style Conventions for Printing and Using Units
6.1 Rules and style conventions for unit symbols
6.1.1 Typeface
6.1.2 Capitalization
6.1.3 Plurals
6.1.4 Punctuation
6.1.5 Unit symbols obtained by multiplication
6.1.6 Unit symbols obtained by division
6.1.7 Unacceptability of unit symbols and unit names together
6.1.8 Unacceptability of abbreviations for units
6.2 Rules and style conventions for SI prefixes
6.2.1 Typeface and spacing
6.2.2 Capitalization
6.2.3 Inseparability of prefix and unit
6.2.4 Unacceptability of compound prefixes
6.2.5 Use of multiple prefixes
6.2.6 Unacceptability of stand-alone prefixes
6.2.7 Prefixes and the kilogram
6.2.8 Prefixes with the degree Celsius and units accepted for use with the SI
7 Rules and Style Conventions for Expressing Values of Quantities
7.1 Value and numerical value of a quantity
7.2 Space between numerical value and unit symbol
7.3 Number of units per value of a quantity
7.4 Unacceptability of attaching information to units
7.5 Unacceptability of mixing information with units
7.6 Symbols for numbers and units versus spelled-out names of numbers and units
7.7 Clarity in writing values of quantities
7.8 Unacceptability of stand-alone unit symbols
7.9 Choosing SI prefixes
7.10 Values of quantities expressed simply as numbers: the unit one, symbol 1
7.10.1 Decimal multiples and submultiples of the unit one
7.10.2 %, percentage by, fraction
7.10.3 ppm, ppb, and ppt
7.10.4 Roman numerals
7.11 Quantity equations and numerical-value equations
7.12 Proper names of quotient quantities
7.13 Distinction between an object and its attribute
7.14 Dimension of a quantity
8 Comments on Some Quantities and Their Units
8.1 Time and rotational frequency
8.2 Volume
8.3 Weight
8.4 Relative atomic mass and relative molecular mass
8.5 Temperature interval and temperature difference
8.6 Amount of substance, concentration, molality, and the like
8.6.1 Amount of substance
8.6.2 Mole fraction of B; amount-of-substance fraction of B
8.6.3 Molar volume
8.6.4 Molar mass
8.6.5 Concentration of B; amount-of-substance concentration of B
8.6.6 Volume fraction of B
8.6.7 Mass density; density
8.6.8 Molality of solute B
8.6.9 Specific volume
8.6.10 Mass fraction of B
8.7 Logarithmic quantities and units: level, neper, bel
8.8 Viscosity
8.9 Massic, volumic, areic, lineic
9 Rules and Style Conventions for Spelling Unit Names
9.1 Capitalization
9.2 Plurals
9.3 Spelling unit names with prefixes
9.4 Spelling unit names obtained by multiplication
9.5 Spelling unit names obtained by division
9.6 Spelling unit names raised to powers
9.7 Other spelling conventions
9.8 Unacceptability of applying mathematical operations to unit names
10 More on Printing and Using Symbols and Numbers in Scientific and Technical Documents
10.1 Kinds of symbols
10.2 Typefaces for symbols
10.3 Greek alphabet in roman and italic type
10.4 Symbols for the elements
10.5 Printing numbers
11 Check List for Reviewing Manuscripts
Appendix A. Definitions of the SI Base Units and the Radian and Steradian
Appendix B. Conversion Factors
Appendix C. Comments on the References of Appendix D—Bibliography
Appendix D. Bibliography
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