The Output Variance notification indicates that the selected curing light is not operating within ± 20 % of manufacturer's stated output. According to ISO 10650:2018 light output shall vary by no more than ± 20% of the manufacturer's stated output.
International Organization for Standardization. (2018). Dentistry — Powered polymerization activators (ISO Standard No. 10650:2018(E)). Retrieved from https://www.iso.org/standard/73302.html
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