---
kind: "section"
citation: "10 C.F.R. § 429.27"
title: "10"
number: "429.27"
heading: "General service fluorescent lamps."
url: "https://uscodex.org/cfr/10/429.27"
---

# §429.27. General service fluorescent lamps.

- (a) **Determination of Represented Value.** Each manufacturer must determine represented values, which include certified ratings, for each basic model by testing, in accordance with the following sampling provisions.
  - (1) **Units to be tested.**
    - (i) **When testing, use a sample comprised of production units.** The same sample of units must be tested and used as the basis for representations for rated wattage, average lamp efficacy, color rendering index (CRI), and correlated color temperature (CCT).
    - (ii) For each basic model, randomly select and test a sample of sufficient size, but not less than 10 units, to ensure that represented values of average lamp efficacy are less than or equal to the lower of:
      - (A) **The arithmetic mean of the sample—** or,
      - (B) The lower 95 percent confidence limit (LCL) of the true mean divided by .97, where:
  - (2) Any represented values of measures of energy efficiency or energy consumption for all individual models represented by a given basic model must be the same.
  - (3) Represented values of CCT, CRI and rated wattage must be equal to the arithmetic mean of the sample.
- (b) **Certification reports.**
  - (1) The requirements of [§ 429.12](/cfr/10/429.12.md) apply to general service fluorescent lamps; and
  - (2) Pursuant to [§ 429.12(b)(13)](/cfr/10/429.12.md?p=b-13), a certification report shall include the following public product-specific information: The testing laboratory's ILAC accreditation body's identification number or other approved identification assigned by the ILAC accreditation body, average lamp efficacy in lumens per watt (lm/W), rated wattage in watts (W), CCT in Kelvin (K), and CRI.
- (c) **Rounding Requirements.**
  - (1) **Round rated wattage to the nearest tenth of a watt.**
  - (2) **Round average lamp efficacy to the nearest tenth of a lumen per watt.**
  - (3) **Round CCT to the nearest 100 kelvin (K).**
  - (4) **Round CRI to the nearest whole number.**

## Notes

### Amendments

[87 FR 53637, Aug. 31, 2022]

### Authority

Authority: 42 U.S.C. 6291-6317; 28 U.S.C. 2461 note.

### Source

Source: 76 FR 12451, Mar. 7, 2011, unless otherwise noted.

### Amendments

[87 FR 53637, Aug. 31, 2022]