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For lamps, can one use the tolerance in Light Output and Lumen Maintenance? Follow

While the application of tolerances is allowed in both sections if needed, the use of tolerances can increase the products’ risk of failure in verification testing. EPA recommends that ENERGY STAR product brand owners design products to exceed the minimum specification requirements. The 3% tolerance for light output measurements is applied to each unit’s measured value to allow for consistent and repeatable application by the certification body determining compliance with the requirement. The 3% tolerance may be applied to initial flux measurements for efficacy and light output evaluation and to luminous flux measurements at points prescribed by lumen maintenance testing, such as 1000-hr, 3000-hr and 6000-hr readings, but may not be combined with any additional tolerances or adjusted for measurement uncertainty.

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