The Commission shall monitor market developments relating to this Directive and its implementation with regard to the smooth functioning of the internal market and international trade and shall submit a report on those developments, accompanied by proposals where appropriate, to the European Parliament and to the Council by 31 December 2019.’;

the Annex shall be amended as follows:

in Chapter I, point 1.1, the paragraph entitled ‘Unit of thermodynamic temperature’ shall be replaced by the following:

‘Unit of thermodynamic temperature

The kelvin, unit of thermodynamic temperature, is the fraction 1/273,16 of the thermodynamic temperature of the triple point of water.

This definition refers to water having the isotopic composition defined by the following amount-of-substance ratios: 0,00015576 mole of 2 H per mole of 1 H, 0,0003799 mole of 17 O per mole of 16 O and 0,0020052 mole of 18 O per mole of 16 O.

(Thirteenth CGPM (1967), resolution 4 and Twenty-third CGPM (2007), resolution 10)’;

in Chapter I, point 1.1.1, the title shall be replaced by the following:

‘Special name and symbol of the SI derived unit of temperature for expressing Celsius temperature’;

in Chapter I, point 1.2, the title shall be replaced by the following:

‘1.2. SI derived units’;

in Chapter I, point 1.2.1 shall be deleted;

in Chapter I, points 1.2.2 and 1.2.3 shall be replaced by the following:

‘1.2.2. General rule for SI derived units

Units derived coherently from SI base units are given as algebraic expressions in the form of products of powers of the SI base units with a numerical factor equal to 1.

1.2.3. SI derived units with special names and symbols

Quantity

Expression

Symbol

In terms of other SI units

In terms of SI base units

Plane angle

radian

m · m –1

Solid angle

steradian

m 2 · m –2

Frequency

newton

m · kg · s –2

Pressure, stress

pascal

N · m –2

m –1 · kg · s –2

Energy, work; quantity of heat

m 2 · kg · s –2

Power ( 5 ) , radiant flux

J · s –1

m 2 · kg · s –3

Quantity of electricity, electric charge

coulomb

Electric potential, potential difference, electromotive force

W · A –1

m 2 · kg · s –3 · A –1

Electric resistance

V · A –1

m 2 · kg · s –3 · A –2

Conductance

siemens

A · V –1

m –2 · kg –1 · s 3 · A 2

Capacitance

C · V –1

m –2 · kg –1 · s 4 · A 2

Magnetic flux

m 2 · kg · s –2 · A –1

Magnetic flux density

Wb · m –2

kg · s –2 · A –1

Inductance

Wb · A –1

m 2 · kg · s –2 · A –2

Luminous flux

cd · sr

Illuminance

lm · m –2

m –2 · cd

Activity (of a radionuclide)

becquerel

Absorbed dose, specific energy imparted, kerma, absorbed dose index

J · kg –1

m 2 · s –2

Dose equivalent

sievert

J · kg –1

m 2 · s –2

Catalytic activity

mol · s –1

Units derived from SI base units may be expressed in terms of the units listed in Chapter I.

In particular, derived SI units may be expressed by the special names and symbols given in the above table; for example, the SI unit of dynamic viscosity may be expressed as m –1 · kg · s –1 or N · s · m –2 or Pa · s.’;

in Chapter II, the following row shall be deleted from the table:

‘Land registration

1 ac = 4 047 m 2

in Chapter II, the final sentence shall be replaced by the following: ‘The units listed in this Chapter may be combined with each other or with those in Chapter I to form compound units.’

DIRECTIVE 2009/3/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 11 March 2009 amending Council Directive 80/181/EEC on the approximation of the laws of the Member States relating to units of measurement