I really like flashlights, and I have for years. I’m not super knowledgeable and FAR from what I’d call a “professional”, and I’m far from the hobbyist that some of you are. I know very little about all the different emitters, or drivers, or color temp, etc… I basically just know I like flashlights, and I have a bunch that happened to appeal to me at the time of purchase lol. I have some pretty expensive lights(expensive for me), some powerful lights (again my standards), a few that I got just bc it looks cool, or like the material, and a bunch of cheaper lights as well.
So needless to say, when I saw this it kinda threw me for a loop. What makes this uv-a flashlight worth this price tag, and what are these “Rolls Royce requirements” all about? Please enlighten me lol.. bc I feel like there are a lot of other uv-a lights that are MUCH cheaper, and in my unknowledgeable mind would do everything this one would… 🤷🏽♂️
by Elemen47
![[Review] Manker E02 III - Tiny flashlight with dual fuel options and powerful LED](https://www.edctips.com/wp-content/uploads/2026/01/hk67lz7bpsdg1-770x515.jpg "[Review] Manker E02 III – Tiny flashlight with dual fuel options and powerful LED")
4 Comments
Rolls-Royce don’t just make cars, they also make aerospace and marine engines. RRES 90061 is an engineering specification for the control of UV lights used in non destructive testing by its employees contactors and vendors. Basically a spec so your inspection light doesn’t damage something and make a plane crash…
Part of component testing is non-destructive testing (NDT), and part of that is fluorescent penetrant inspection (FPI).
Basically fluid is sprayed onto the part that penetrates small cracks and fluoresces under UV light, allowing you to easily see cracks.
This specification will make sure that the light puts out the right frequency to activate the fluorescent dye.
Can you imagine buying a load of UV lights that don’t activate the dye, testing cracked parts but finding no cracks?!
The Rolls-Royce RRES 90061 is an engineering specification released in October 2014 and contains requirements for the control of UV LED lights used in non-destructive testing (NDT) by its employees, contractors and vendors. Each Labino light referred to in this section is measured in accordance with this specification and a serialized unit test report is included with each light. A type test report that contains more detailed data can be supplied on request. All Rolls-Royce RRES 90061 compliant products are listed on page 8 of the 2023 catalog
Please be advised that generic UV lights that have several UV LEDs mounted within a few millimeters from one another in a small housing create an excessive amount of heat which significantly shortens the life of the LEDs. Due to the small housing and large number of LEDs you cannot observe the LEDs failing as there is still some light coming out, albeit diminishing rapidly, unable to verify compliance with ASTM E3022 and consequently NADCAP checklists. ASTM E3022 requires that critical components such as failed LEDs be replaced before use.
Some examples of UV lights that comply with this specification include:
BB 2.0 Ikaros UV LED light
This light is penetrant resistant, has an IP68 waterproof rating, and a beam diameter of 10.6 inches.
UVE365 H1A-18 W FL UV LED Hand Flood Lamp
This lamp has an automatic dimmable white light and a short minimum working distance.

UVG5 2.0 UV LED Headlight
This headlight has a white light block filter and a battery run time of 8–14 hours.
UVISION LAMP 365, STANDARD, 6M-CORD ROLLS ROYCE
This lamp has dimensions of Ø 8.9 cm x 19 cm and weighs 0.73 kg.

As part of the certification process, lamp manufacturers must verify the working distance of each lamp for a maximum irradiance of 5,000 µW/cm2. The working distance should be used instead of the standard 15 in / 38 cm distance.
Rolls-Royce is also a areospace manufacturer.
UV lights are used to spot coolant and hydraulic fluid leaks.
Everything in this field need to have some certification, and price reflects that.