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Testing & Standards

How do we ensure SSL product quality? How can we be confident that product test results are reliable? One of today's challenge is a lack of global agreement on SSL test standards and mutual recognition of regional accreditation programmes. This situation creates trade barriers and increases the overhead costs of doing business, slowing down the adoption of LEDs and associated energy savings. 

The IEA 4E SSL Annex is working with testing laboratories and accreditation bodies to address these challenges. By comparing 110 LED testing laboratories around the world, the 2013 Inter-laboratory Comparison (see Final Reportproduced a common proficiency test that:

  • Testing laboratories used to compare their LED product testing performance (integrating sphere) with other laboratories around the world; and
  • Regional accreditation bodies could use in support of mutual recognition of other accreditation programmes, thereby lowering accreditation and product testing costs.

Relevance of New Test Methods

Assess the relevance and application of new CIE TC2-71 test method for the purpose of government-led testing and enforcement activities (see the task on the application of new test methods).

Product Lifetime Testing & Guidance

Validating and determining LED product lifetime can be challenging. The Annex will research and synthesize credible findings from lifetime studies (see lifetime study review) and test methods in support of policy-making (see policy maker guidance on lifetime).

Laboratory Comparability

The 2013 Interlaboratory Comparison focused on establishing a common proficiency test for accreditation. The next phase of this work will be to develop a global interlaboratory comparison proficiency testing scheme for goniophotometer-based lamp and luminaire testing (see interlaboratory comparison).