Full Technical Test Data
DARKBEAM Dual 365-395nm
Full published measurement and product information from our UV flashlight testing record.
Continuous Output Results
Published output, retention, and runtime values from the continuous-output test record.
UV Geek UV Energy Index
5
Output Retained — 10 Min
0%
Output Retained — 30 Min
0%
Continuous Operating Time
12+ hr
Power Curve
UV Irradiance at Distance
UV irradiance measurements are shown in µW/cm².
| Distance | UV Irradiance |
|---|---|
| 10 ft | 19 µW/cm² |
| 20 ft | — |
| 30 ft | — |
| 40 ft | — |
| 50 ft | — |
| 60 ft | — |
Amazon Product Record
Exact Amazon Listing Name
DARKBEAM UV Flashlight 365nm & 395nm Dual Black Light Woods Lamp Ringworm | 365 395 nm Blacklight Flashlights, Rechargeable LED Ultraviolet Powerful, for Pet Urine, Uranium Glass, Rocks, Resin Curing
How UV Geek UV Energy Index Is Calculated
During the continuous-output test, the Linshang LS128 measures cumulative UV energy density. The instrument reports accumulated energy in millijoules per square centimeter (mJ/cm²).
Dividing by 1,000 converts the cumulative energy density from mJ/cm² to J/cm². The resulting numerical value is rounded to the nearest whole number and reported as the UV Geek UV Energy Index.
Calculation for this tested flashlight
4736 mJ/cm² ÷ 1,000 = 4.736 J/cm²
UV Geek UV Energy Index = 5
The UV Geek UV Energy Index is a derived comparison metric, not an industry-standard unit of measurement. It should not be confused with instantaneous UV irradiance measurements such as µW/cm².
Testing was conducted by UV Geek using consistent, documented procedures and factory-calibrated measurement equipment. Published results and derived metrics reflect the specific units tested, the recorded measurements, and UV Geek’s interpretation of those data.