LEDs - Gallium Indium Nitride UV, violet, purple, blue, aqua, turquoise, green, white. Also Gallium Arsenide and others. New LED MUSEUM! GaN, InGaN, SiC, GaAs, GaP, GaAlP, ZnSe, flashlight, flashlights.

ADVANCEDMART HIGH-POWERED 375nm UVA LED FLASHLIGHT

Advancedmart High-Powered 375nm UVA LED Flashlight, retail $59.99 (http://store.advancedmart.com...)
Manufactured by Ultrafire* (www.ultrafire.net) for Advancedmart (www.advancedmart.com)
Last updated 05-19-10

This 375nm UVA LED Flashlight, sold by Advancedmart, does not have a formal name that I know of, so I'll just call it a "flashlight" on this web page.

It comes in an aluminum body, has a high-powered (3 watt) UVA (ultraviolet-A) LED in its bezel (head), uses two CR123A lithium camera cells for power, and has a rubbery pushbutton on/off switch on its tailcap.

The batteries (two CR123A lithium camera cells) are not included, so you need to go out and purchase them or have some on hand before you can use this light.

The UVA ("ultraviolet type A" or "longwave ultraviolet") radiation emitted by this product is useful in many ways. Let's just name a few of them off from memory.

Detecting uranation, sperm, perspiration, saliva, or other bodily fluids on fabrics
Detecting repairs of antique glass articles -- repairs will "glow"
Determining where Fido was bad
Activation of fluorescent inks/dyes (such as "blacklight" posters)
Charging glow-in-the-dark fishing bait -- charging *ANY* glow-in-the-dark material actually
Checking money, credit card and ID cards for security features only visible under UVA radiation

* = Flashlight body is made by UltraFire (it's their WF-501B); I do not yet know how or where the modification to the high-powered UVA LED takes place.

SIZE

To use this flashlight, feed it first (see directly below), and then you can go to town.

Press the button on the tailcap until it clicks and then release it to turn the flashlight on.
Press the button on the tailcap until it clicks and then release it to turn the flashlight off.
Yes, it really is as easy as that.

There is no momentary or signalling mode available when the flashlight is off, however, you can blink the flashlight while it is on by partially depressing the button. If you don't mind the backward or reverse feeling of this, you can blink the flashlight this way.

To change the batteries, unscrew and remove the tailcap, throw it to the ground, and stomp on it with old or used bowling shoes...O WAIT!!! YOU'LL NEED THAT!!! So just set it aside instead.

Tip the two used CR123A cells out of the barrel and into your hand, and dispose of or recycle them as you see fit.

Insert two new CR123A cells into the barrel, orienting them both so that their nipple-ends (+) positives go in first.

Finally, screw the tailcap firmly back on.
Aren't you glad you didn't stomp on that tailcap now?

Current usage measures 250.10mA on my DMM's 400mA scale.

Photograph of the LED emitter in this flashlight.
I only unscrewed the reflector from the heavy brass part that the LED lives in; no Locktight or other sealant was used on these threads. I cannot disassemble it any farther simply because this flashlight does not belong to me.

The flashlight appears to be reasonably sturdy. Ordinary flashlight accidents should not be enough to do it in. However, since this is a loaner, I will not perform the more abusive testing on it.

There is a wide band of knurling (diamond-shaped texturising) milled into the barrel, and some longitudinal fluting on both the bezel and tailcap, so retention (the ability to hold onto the flashlight when your hands are cold, wet, or oily) shouldn't be much of an issue.

This evaluation look an awful lot like the one I wrote for this product?
Thought you'd say so.
That's because the products are functionally identical; differing only in wavelength, so I was able to use its evaluation as a template for this one.

Beam photograph at ~12".
A very large amount of the glow you see is fluorescence of the paper target.

Beam photograph on a nonreactive white wall at ~12".
Some of the glow you see now is caused by the digital camera;
most of them have trouble at these wavelengths.

The security stripe in a U.S. $20 bill fluorescing (glowing) when irradiated with this product.

Spectrographic analysis of the LED in this flashlight.

Same as above; spectrometer's response narrowed to a range between 340nm and 420nm to help pinpoint wavelength.

Spectrographic analysis of the fluorescence of a uranated* glass marble when irradiated with this flashlight.

*"Uranated" - infused with an oxide of uranium, *NOT* piddled on.
Commonly referred to as "Vaseline glass" because it has
a distinct pale yellow-green color when not being irradiated.

Note spelling: "urAnated", not "urEnated","urInated",
"urOnated", "urUnated", or sometimes "urYnated".

Spectrographic analysis of fluorescence of the pink fur of a Patrick Star plush (stuffed critter) when irradiated with this flashlight.

Spectrographic analysis of fluorescence of a large tritium tube when irradiated with this flashlight.

Spectrographic analysis of the fluorescence of the white eyes of a Squidward Tentacles plush (stuffed critter) when irradiated with this flashlight.

Spectrographic analysis of the fluorescence of a pink tritium Glow Ring when irradiated with this flashlight.

Spectrographic analysis of the fluorescence of a blue tritium Glow Ring when irradiated with this flashlight.

Spectrographic analysis of the fluorescence of the orange mesh of a LEDTronics VestLED when irradiated with this flashlight.

Spectrographic analysis of the fluorescence of the green safety stripes of a LEDTronics VestLED when irradiated with this flashlight.

Fluorescence of the NIA 2009 Commemorative Insulator in uranated* glass when irradiated with this flashlight.

*"Uranated" - infused with an oxide of uranium, *NOT* piddled on.
Commonly referred to as "Vaseline glass" because it has
a distinct pale yellow-green color when not being irradiated.

Note spelling: "urAnated", not "urEnated","urInated",
"urOnated", "urUnated", or sometimes "urYnated".

Spectrographic analysis of fluorescence of the white part of the shirt of a SpongeBob SquarePants plush (stuffed critter) when irradiated with this flashlight.

Spectrographic analysis of fluorescence of the outer casing of a Dorcy Marshalling Wand/Flare when irradiated with this flashlight.

Spectrographic analysis of the fluorescence of the phosphor cap of a Nichia NSPWR70CSS-K1 White High-Flux LED when irradiated with this flashlight.

Spectrographic analysis of the fluorescence of a Tritium Torch when irradiated with this flashlight.

USB2000 spectrometer graciously donated by P.L.

ProMetric analysis

Beam cross-sectional analysis.
The imager in this instrument is ***JUST BARELY*** sensitive enough to this
wavelength range to get a reasonably accurate beam cross-section.

Image made using the ProMetric System by Radiant Imaging.

TEST NOTES:
Test unit of this plus one other UVA flashlight was sent by J.W. of Advancedmart on 03-10-10, and was received on the afternoon of 04-19-10. The units had a long initial lead time, which is why the two dates shown here are so far apart. I was fully expecting the lead time -- no surprises there.

This flashlight is a loaner; when I return it, that dreadful "

" icon will appear next to its listings on this website, denoting the fact that I no longer have it available for additional analyses or comparisons.

Product (the flashlight host body anyway) was manufactured in China.
A product's country of origin really does matter to some people, which is why I published it on this web page.

UPDATE: 05-19-10
This product has now been boxed up for return, so that dreadful "

" icon will now appear next to its listings on this website; denoting the fact that I no longer have it available for additional testing, analyses, or comparisons.

PROS:
Very powerful portable UVA source
Reasonably tough & durable host body
Water-resistant construction
Long battery life (adv. at 240 hours!)

CONS:
Batteries it needs could be expen$ive and/or difficult to procure in an emergency

MANUFACTURER: Ultrafire*
PRODUCT TYPE: Small UVA LED light
LAMP TYPE: High-powered (3 watt) UVA LED
No. OF LAMPS: 1
BEAM TYPE: Medium-narrow spot w/ dimmer corona
SWITCH TYPE: Pushbutton on/off on tailcap
BEZEL: Metal; LED & reflector protected by plastic window
BATTERY: 2x CR123A cells
CURRENT CONSUMPTION: 250.10mA
WATER- AND PEE-RESISTANT: Yes
SUBMERSIBLE: NO WAY HOZAY!!!
ACCESSORIES: Wrist lanyard
SIZE: 130.0mm length, 30.0mm head dia., 25.0mm body dia.
WEIGHT: 87.0 grams
WARRANTY: 90 days

PRODUCT RATING:

Advancedmart High-Powered 375nm UVA LED Flashlight * http://store.advancedmart.com...

Do you manufacture or sell an LED flashlight, task light, utility light, or module of some kind? Want to see it tested by a real person, under real working conditions? Do you then want to see how your light did? If you have a sample available for this type of real-world, real-time testing, please contact me at ledmuseum@gmail.com.

Please visit this web page for contact information.

Unsolicited flashlights, LEDs, and other products appearing in the mail are welcome, and it will automatically be assumed that you sent it in order to have it tested and evaluated for this site.
Be sure to include contact info or your company website's URL so visitors here will know where to purchase your product.

WHITE 5500-6500K InGaN+phosphor 
ULTRAVIOLET 370-390nm GaN 
BLUE 430nm GaN+SiC
BLUE 450 and 473nm InGaN
BLUE Silicon Carbide
TURQUOISE 495-505nm InGaN
GREEN 525nm InGaN 
YELLOW-GREEN 555-575mn GaAsP & related
YELLOW 585-595nm
AMBER 595-605nm
ORANGE 605-620nm
ORANGISH-RED 620-635nm
RED 640-700nm
INFRARED 700-1300nm
True RGB Full Color LED
Spider (Pirrahna) LEDs
SMD LEDs
True violet (400-418nm) LEDs
Agilent Barracuda & Prometheus LEDs
Oddball & Miscellaneous LEDs
Programmable RGB LED modules / fixtures
Where to buy these LEDs 
Links to other LED-related websites
The World's First Virtual LED Museum
Legal horse puckey, etc.
RETURN TO OPENING/MAIN PAGE

LEDSaurus (on-site LED Mini Mart)

This page is a frame from a website.
If you arrived on this page through an outside link,you can get the "full meal deal" by clicking here.