The WELL Building Standard certification from the International WELL Building Institute (IWBI) emphasizes lighting that supports health through three specific criteria:
- Circadian design – The light must contain sufficient melanopic energy (EDI ≥ 250 melanopic lux) to synchronize biological clocks. Spectrasol meets this condition even at lower illumination levels (around 300 lx).
- Limiting harmful blue light – The HBL ratio (415–455 nm) is regulated in Spectrasol.
- Visual comfort – Requirement for minimal glare (UGR <19) and high CRI. Spectrasol luminaires have UGR <16 due to specific luminaire designs, and with diffused indirect light distribution, it is even 0. Additionally, it provides a high CRI with a minimum value of 95, often reaching up to 99.
Within the WELL certification framework, Spectrasol lighting can achieve the maximum number of points.
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