1. What is UV-C Dose?

UV-C dose is the product of UV-C intensity and exposure time, measured in millijoules per square centimeter (mJ/cm²). It's a critical parameter for determining the effectiveness of UV disinfection systems.

2. How Does the Calculator Work?

The calculator uses the basic UV-C dose equation:

Where:

• \( Dose \) — UV-C dose (mJ/cm²)
• \( Intensity \) — UV-C intensity (mW/cm²)
• \( Time \) — Exposure time (seconds)

Explanation: The equation calculates the total energy delivered per unit area by multiplying the intensity by the exposure duration.

3. Importance of UV-C Dose Calculation

Details: Proper UV-C dose calculation is essential for ensuring effective microbial inactivation while avoiding overexposure that could damage materials or be harmful to humans.

4. Using the Calculator

Tips: Enter UV-C intensity in mW/cm² and exposure time in seconds. Both values must be positive numbers for valid calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical UV-C dose for disinfection?
A: Common doses range from 10-50 mJ/cm² for bacteria and 20-200 mJ/cm² for viruses, depending on the microorganism.

Q2: How do I measure UV-C intensity?
A: Use a calibrated UV-C radiometer or sensor designed for the 254nm wavelength.

Q3: Does distance affect UV-C dose?
A: Yes, intensity follows the inverse square law with distance from the source, affecting the final dose.

Q4: Are there safety considerations?
A: UV-C exposure can be harmful to skin and eyes. Always follow safety guidelines and use appropriate PPE.

Q5: Can this calculator be used for UV-A or UV-B?
A: The calculation method is the same, but effectiveness for different applications varies by wavelength.