How to measure CRI 

In other words, CRI is calculated by testing 8 standard colour swatches selected by the international commission on illumination(CIE).The swatches are illuminated under the light soure and then compared to how they look under a light source with a perfect score, The colours are then scored using some very advanced maths, and the 8 results are averaged to achieve the CRI rating .This process is a bit complicated for the average how or business owner , so instead , loook for the CRI rating on the light bulb information panel on the packaging , on the product information page , or by asking for help. 

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