Annex I Units of Measure: Code elements listed by quantities - UNECE
Annex I Units of Measure: Code elements listed by quantities - UNECE
Annex I Units of Measure: Code elements listed by quantities - UNECE
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<strong>Code</strong>s for <strong>Units</strong> <strong>of</strong> <strong>Measure</strong> used in International Trade<br />
<strong>Units</strong> <strong>of</strong> <strong>Measure</strong>: <strong>Code</strong> <strong>elements</strong> <strong>listed</strong> <strong>by</strong> <strong>quantities</strong><br />
Quantity<br />
Level<br />
Cat.<br />
Use<br />
Id.<br />
Name<br />
Conversion factors to SI<br />
units<br />
(1 unit equals)<br />
Represen.<br />
Symbol<br />
Cross<br />
ref.<br />
total ionization <strong>by</strong> a<br />
particle<br />
1 l<br />
mobility 1 square metre per volt<br />
second<br />
m ² /(V . s) 812<br />
ion number density 1 reciprocal cubic metre m -³ 813<br />
ion density<br />
neutron number density<br />
recombination<br />
coefficient<br />
1 cubic metre per second m ³ /s 816<br />
neutron speed 1 metre per second m/s 817<br />
diffusion coefficient, 1 square metre per second m ² /s 818<br />
diffusion coefficient for<br />
neutron number density<br />
neutron source density 1 reciprocal second per cubic<br />
metre<br />
slowing down density 1 reciprocal cubic metre per<br />
second<br />
resonance escape<br />
probability<br />
s -¹ /m ³ 820<br />
m -3 /s 821<br />
1 one 1 822<br />
lethargy 1 one 1 823<br />
average logarithmic<br />
energy decrement<br />
1 one 1 824<br />
reactivity 1 one 1 825<br />
reactor time constant 1 second s 826<br />
activity 1 becquerel Bq 827<br />
2 curie 3,7 x 10 10 Bq (exactly) Ci 828<br />
energy imparted 1 joule J 829<br />
mean energy imparted 1<br />
specific energy imparted,<br />
massic energy imparted<br />
1 gray Gy 831<br />
1S milligray mGy 832<br />
absorbed dose 2 rad 10 -2 Gy rad 833<br />
kerma 2 X erg per gram 10 -4 J/kg (exactly) erg/g 834<br />
dose equivalent 1 sievert Sv 835<br />
1S millisievert mSv 836<br />
2 rem 10 - ² Sv rem 837<br />
absorbed dose rate 1 gray per second Gy/s 838<br />
kerma rate 2 X erg per gram second 10 - 4<br />
W/kg (exactly) erg/g . s 839<br />
linear energy transfer 1 joule per metre J/m 840<br />
mass energy transfer<br />
coefficient<br />
1 electronvolt per metre 1,602 177 33 x 10 - 19<br />
J/m eV/m 841<br />
2 X erg per centimetre 10 - 5<br />
J/m (exactly) erg/cm 842<br />
1 square metre per kilogram m ² /kg 843<br />
exposure 1 coulomb per kilogram C/kg 844<br />
Recommendation 20 173
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