Member State authorities shall test a sample batch of minimum 20 lamps of the same model from the same manufacturer randomly selected.

The batch shall be considered to comply with the provisions set out in Annex II as applicable, of this Regulation if the average results of the batch do not vary from the limit, threshold or declared values by more than 10 %.

Otherwise, the model shall be considered not to comply.

For the purposes of checking conformity with the requirements, the authorities of the Member States shall use accurate and reliable state-of-the-art measurement methods which deliver reproducible results, including:

• where available, harmonised standards the reference numbers of which have been published for that purpose in the Official Journal of the European Union in accordance with Articles 9 and 10 of Directive 2005/32/EC,

• otherwise, the methods set out in the following documents:

  Measured parameter	Organisation6	Reference	Title
  Lamp mercury content	European Commission	Decision 2002/747/EC (Annex)	Commission Decision 2002/747/EC of 9 September 2002 establishing revised ecological criteria for the award of the Community eco-label to light bulbs and amending Decision 1999/568/EC
  Luminous efficacy	Cenelec	EN 50285:1999	Energy efficiency of electric lamps for household use — Measurement methods
  Lamp caps	Cenelec	EN 60061:1993 All amendments up to A40:2008	Lamp caps and holders together with gauges for the control of interchangeability and safety Part 1: Lamp caps
  Lamp lifetime	Cenelec	EN 60064:1995 Amendments A2:2003 A3:2006 A4:2007 A11:2007	Tungsten filament lamps for domestic and similar general lighting purposes - Performance requirements
  	Cenelec	EN 60357:2003 Amendment A1:2008	Tungsten halogen lamps (non-vehicle) — Performance specifications
  	Cenelec	EN 60969:1993 Amendments A1:1993 A2:2000	Self-ballasted lamps for general lighting services — Performance requirements
  Lamp start time/warmup time	Cenelec	EN 60969:1993 Amendments A1:1993 A2:2000	Self-ballasted lamps for general lighting services — Performance requirements
  Power factor	Cenelec	EN 61000-3-2:2006	Electromagnetic compatibility (EMC) Part 3-2: Limits — Limits for harmonic current emissions (equipment input current ≤ 16 A per phase)
  Specific effective radiant UV power	Cenelec	EN 62471:2008	Photobiological safety of lamps and lamp systems
  Colour rendering	International Commission on Illumination	CIE 13.3:1995	Method of Measuring and Specifying Colour Rendering Properties of Light Sources
  Chromaticity Correlated Colour Temperature (Tc [K])	International Commission on Illumination	CIE 15:2004	Colorimetry
  Luminance	International Commission on Illumination	CIE 18.2:1983	The Basis of Physical Photometry
  Luminous flux	International Commission on Illumination	CIE 84:1989	The Measurement of Luminous Flux
  Lamp Lumen Maintenance Factor (LLMF)	International Commission on Illumination	CIE 97:2005	Maintenance of indoor electric lighting systems
  Lamp Survival Factor (LSF)
  Cenelec: rue de Stassart/De Stassartstraat 35, B-1050 Brussels, tel. (32-2) 519 68 71, fax (32-2) 519 69 19 (http://www.cenelec.org). International Commission on Illumination: CIE Central Bureau Kegelgasse 27 A-1030 Vienna AUSTRIA tel: +43 1714 31 87 0 fax: +43 1714 31 87 18 (http://www.cie.co.at/).