The Dosing FormulaTo determine how many minutes you need in front of a device to hit a specific target, use the following calculation:[Irradiance (mW/cm2) × Time (seconds)] ÷ 1,000 = Surface Dose (J/cm2)For example, if your device provides an irradiance of 50 mW/cm2 at 12 inches and you want to receive a dose of 15 J/cm2, you would need to treat the area for 300 seconds (5 minutes).