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Home /  Support Center /  Knowledge Base /  UV-A flashlights

365nm real UV-A LED Rechargeable Head Torch

We are seeking a rechargeable head torch of this specification order strip light/tubes of the same specification for use in the UK. Could you assist/recommend a product?

Based on the details provided, we might recommend the 365nm realUV™ LED Flashlight with BLACKOUT™ Filter Technology product. 

However, please note that the battery option is not available for shipping to all territories, given the international air freight restrictions on batteries. As such, we would likely recommend the ‘no battery included’ option for your UK destination order.

For more information regarding this product, we hope that the below article from our website proves to be helpful.

Everything You Need to Know About UV Flashlights:

Irradiance Measurement of realUV LED Flashlight

How is the mW/cm^2 irradiance measured for this UV light?

The irradiance values are measured using a UV irradiance meter calibrated to 365 nm.

​Is there any information as to how much white/visible light is emitted?

We unfortunately have not measured the visible light component. Anecdotally, very little visible light is present, though what can be observed is a very dim, blueish light.

Can I expect this to be significantly brighter than a standard 4 Watt 365nm black/UV bulb?

In terms of total energy output, you will likely see similar energy levels. However, because the flashlight focuses the UV beam at a much narrower angle, the effective irradiance levels will likely be much higher than a standard UV fluorescent lamp.

Any links to video demonstrations? 

Unfortunately, we do not have any video demonstrations at this time. However, in consideration of your questions above, we would perhaps recommend testing and taking advantage of our free returns policy. If for whatever reason you find that the UV flashlight will not work for your project, we would be more than happy to pay for return shipping and offer a full refund. 

UV-A Flashlight for Pet Stain Solution

I was wondering how visible dog stains are with your UV light in normal house lighting with lights on and how far the beam reaches. 

Our UV flashlight at 365 nm is a great wavelength for observing fluorescence effects. Pet stains are quite reactive to UV wavelengths and our product would be a great option for your needs.

​The beam reaches more than 15 feet, so the product should be more than sufficient for inspection of standard indoor spaces.

Can a UV Flood Light be made available with a VIS-blocking filter?

Can this be made available with a VIS-blocking filter per your UV flashlight?

We do have a new UV flood light model at 50 watts with the Blackout filter that is used on our flashlight.

Does the filter have an IR leak? (As do the Wratten 18A and the equivalents)?

We do believe that the filter does allow IR to pass through.

Therefore, depending on the sensitivity of your equipment, incorporating an additional IR filter may be required.

​We would imagine, however, that the infrared produced by the UV LED would be limited to the thermal radiation component only (as the LED chip itself heats up), as all of the radiometric output would be confined to the UV-A band.

What is the irradiance of UV-A fluorescent bulbs versus distance?

I enjoyed reading through your webpage "Understanding UV-A Irradiance, and Requirements for Various Applications."I'm trying to figure out the (approximate) irradiance values at different distances. I've been given two values for a 365nm fluorescent bulb fixture: 1,700 uW/cm2 @ 5 inches and 800 uW/cm2 @ 12 inches. I've tried applying the Inverse Square Law but this isn't working for me. 

We would expect that the inverse square law would indeed apply for a fluorescent lamp as well, but there may of course be some variations depending on the lamp length or other factors.

I would recommend reaching out to the manufacturer of the lamp for additional details, or purchase a UV meter to empirically determine irradiance values.

LED Lighting for Finding Pet Stains

I'm looking for a good light to find pet stains in the basement apartment that I rent out. Which level of light, 365 or 395, would I need? And would the flood light work well for that? Or is there a better product option?

We generally recommend 365 nm for this application, as this wavelength provides stronger fluorescence and therefore more visible contrast of the stains. For additional insights on comparing 365 nm with 395 nm, the following article may be helpful:

​The flood light can be a nice option, but for a portable option, our UV flashlight may be an even better option​. Please see below for the product link:

Does your realUV™ LED Flood Light Waterproof?

I bought one of your UV flood lights and wanted to verify that it is waterproof. I didn't see any information about it on the website, but since it's a floodlight, I assume it is. Would you please verify?

We are happy to confirm that our realUV™ LED Flood Light is IP65 waterproof rated.

365NM UV Flashlight with Battery Installation Guide - PN 7023

I purchased UV flashlight with Lithium battery and USB charger. In what direction does the positive terminal of the battery go into the flashlight? Is the Lithium battery charged as supplied?

The battery should be inserted positive-end first. In other words, the positive terminal should be closest to the head of the flashlight. The battery is discharged and will require a full initial charge before use.

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