# The Ecodesign for Energy-Related Products and Energy Information (Lighting Products) Regulations 2021, Paragraph 7: Verification tolerances


(1) The verification tolerances set out in Table 14 must be used only by the market surveillance authority and only for the purposes of this Schedule.
(2) The supplier must not use the verification tolerances—
(a) as allowed tolerances to establish the values in the technical documentation;
(b) in order to interpret those values with a view to achieving compliance; or
(c) to communicate better performance.
Table 14
Verification tolerances
Parameter
Verification tolerances
Full-load on-mode power Pon (W):
Pon ≤ 2W
The determined value must not exceed the declared value by more than 0.20W.
2W < Pon ≤ 5W
The determined value must not exceed the declared value by more than 10%.
5W < Pon ≤ 25W
The determined value must not exceed the declared value by more than 5%.
25W < Pon ≤ 100W
The determined value must not exceed the declared value by more than 5%.
100W < Pon
The determined value must not exceed the declared value by more than 2.5%.
Displacement factor (0-1)
The determined value must not be less than the declared value minus 0.1 units.
Useful luminous flux Φuse (lm)
The determined value must not be less than the declared value minus 10%.
Standby power Psb and networked standby power Pnet (W)
The determined value must not exceed the declared value by more than 0.10W.
CRI and R9 (0-100)
The determined value must not be less than the declared value by more than 2.0 units.
Flicker (Pst LM) and stroboscopic effect (SVM)
The determined value must not exceed the declared value by more than 0.1, or by more than 10% if the declared value is more than 1.0.
Colour consistency (MacAdam ellipse steps)
The determined number of steps must not exceed the declared number of steps. The centre of the MacAdam ellipse must be the centre declared by the supplier with a tolerance of 0.005 units.
Beam angle (degrees)
The determined value must not deviate from the declared value by more than 25%.
Total mains efficacy ηTM (lm/W)
The determined value (quotient) must not be less than the declared value minus 5%.
Lumen maintenance factor (for LED and OLED)
The determined XLMF% of the sample must not be less than XLMF, MIN% in accordance with the test in Schedule 5.
Survival factor (for LED and OLED)
At least 9 light sources of the test sample must be operational after completing the endurance test in Schedule 5.
Excitation purity (%)
The determined value must not be less than the declared value minus 5%.
Correlated colour temperature (K)
The determined value must not deviate from the declared value by more than 10%.
Peak luminous intensity (cd)
The determined value must not deviate from the declared value by more than 25%.
(3) For light sources with linear geometry which are scalable but of very long length, such as LED strips or strings, verification testing must consider a length of 50 cm, or, if the light source is not scalable there, the nearest value to 50 cm. The light source manufacturer or importer must indicate which separate control gear is suitable for this length.
(4) When verifying if a product model is a light source, the market surveillance authority must compare the measured values for—
(a) chromaticity coordinates (x and y);
(b) luminous flux;
(c) luminous flux density; and
(d) colour rendering index,
directly with the limit values set out in the definition for light source in regulation 2(1), without applying any tolerances.
(5) If any of the 10 units in the sample satisfies the conditions for being a light source, the product model must be considered to be a light source.
(6) Light sources that allow the end-user to control, manually or automatically, directly or remotely—
(a) the luminous intensity;
(b) colour;
(c) correlated colour temperature;
(d) spectrum; or
(e) beam angle,
of the emitted light, must be tested using the reference control settings.

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Source: https://www.legislation.gov.uk/ukdsi/2021/9780348225488/schedule/13/paragraph/7 (the official version)
Page: https://openlegislation.uk/draft-ecodesign-for-energy-related-products-and-energy-information-lighting-products-regulations-2021/schedule-13/paragraph-7
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.