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What is the minimum CRI (color rendering index) a lamp must have to qualify for the Express program?

April 26, 2017color CRI Express index lamp minimum program qualify rendering

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What is the minimum CRI (color rendering index) a lamp must have to qualify for the Express program?

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The Express Program requires T8 lamps have a minimum CRI of 80 and T5 lamps have a minimum CRI of 82. Lower CRI lamps are made with halo phosphors which are less efficient than an 80 CRI lamp that is made with tri-phosphors.