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This may seem obvious to the vast majority of you, but in our experience, for some it is worth clearing this one up.

In a nutshell you should NOT expect a powerful high intensity UV flashlight to be comparable to a regular (or white light) flashlight. In other words, you should not judge or evaluate a UV flashlight on how "bright" it seems to your eyes. The brighter the UV flashlight does NOT mean the better it is.

The way to know if a UV light is effective is to observe fluorescence of target objects i.e. how well they react to the UV and vividly they glow. The actual UV light source may be and will be "dim" relatively speaking.

Why?

UV light sources are designed to emit mainly UV light (or UV radiation to be more exact). Therefore the majority output from the LEDs will be UV light, and the amount of visible "white" light should be less in proportion. Remember that UV light is not visible because a good UV light will emit the majority of light below the visible spectrum - the visible spectrum is 395+ nanometers in wavelength. Good UV light is below 395nm. 

So, if a decent UV light source is emitting the majority of its light (this is called flux), in the UV range, then naturally your eyes will detect this, and you may be led to conclude that the UV light is "weak", broken, or a scam. But, the way to test, is to point the UV at objects which fluoresce.

Note, that with UV LEDs you will always see a relatively small amount of visible light because this is the way all UV LEDs work - they all emit some light in the 395nm+ region. In other words, there is some flux in the visible region, but not the vast majority of it.

"Better" UV lights will have a low amount of flux in the visible region, and the greatest amount of flux in the UV region. A good UV light source will have a high flux density in the UV region, a term which you may have come across before. 

UV or ultraviolet is a type of light that is emitted in the non-visible spectrum - so you can't see it. It's the portion of the rainbow you see in the sky where the violet disappears into a blur - the blur and the section onward is the UV spectrum, which you can't see but it's there.

When you point a regular light at an object - say a brown scorpion for example - what will you see? You will see a brown scorpion illuminated. If you point a UV light at the same brown scorpion what will you see? The same scorpion glowing a vivid blue/green color. The UV has attributes that cause certain objects to glow (or fluoresce) when only hit by UV light. This is the principle of excitation in solid state physics. In short, the UV has a unique type of ability to hit an object with a type of energy that disrupts the target object to the point where that object starts to emit light (in the visible spectrum) that wasn't present before. In fact the orbits of atomic electrons are disturbed (and placed in a higher state) where they cause light in the visible spectrum to be emitted. This is known as fluorescence by excitation.

This is pretty unique to UV and means that objects that are otherwise hard-to-spot or invisible, become easily and effortlessly visible under UV. That's why UV is so popular. And it's uses and applications grow with imagination. 

Did you know?

That some animals are able to see in the UV spectrum? Did you notice in Predator 2 with Danny Glover, that one of the spectrums (or spectra) used by the Predator in the abattoir was UV? Ok that's a film. Actually, Kestrels (a bird of prey) hover to spot the urine trails of mice, visible only in the UV spectrum. The Elk (or is it Moose?) also has been found to see in the UV spectrum - to its eyes camouflaged wolves appear as dark black objects moving against pure white snow. Under normal light and to our eyes you can hardly see the wolves against the terrain. 

The easiest test is to use ID documents and items. These have features which are designed by the regulatory authorities which ONLY react to ultraviolet light. Such items are a currency bill, an ID document, a Passport, a Driver's Licence, etc.

Take the UV light source and observe the fluorescence of markings. This markings will not be visible under normal light or under a regular flashlight, no matter how powerful.

Many inferior UV lights will not show these up, or if they do, the markings will be difficult to determine easily. The result you are looking for is that the markings should be relatively easy to distinguish and in some cases may just pop out at you. 

UV from the uvBeast is not dangerous to the eye. Please refer to the FDA's 21 CFR 1040 - PERFORMANCE STANDARDS FOR LIGHT-EMITTING PRODUCTS paper.

The FDA classifies "harmful" light emitters being laser emitters, sunlamps (for tanning), UV mercury vapor lamps, and medical UV devices.

And this is scientifically correct since the dangerous types of UV are:

1. UV-B and UV-C which are below 315nm which is also known as shortwave UV in the actinic region. Sunlight does contain UV-B which is why you'll see "dangers of sun exposure articles", whilst the Earth's atmosphere filters out UV-C from the Sun - good thing as it has DNA altering characteristics which is why it is used as a germicide

2. Sunlamps that are VERY high intensity which are designed for darkening the skin via exposure for several hours.

All current uvBeast models emit UV-A (above 315nm wavelength) which is not harmful to the eyes nor skin, and moreover the intensity is not that of sunlamps. Moreover the UV emission is at a wavelength of 365nm, or 385-395nm which is well above the dangerous "315nm and below" UVC region.

However, it is not advisable to look directly at the uvBeast since it will cause discomfort similar to looking at any intense light. The UV glasses which are provided with some of our models will assist in reducing the glare effects and any discomfort that some users may experience.

We take great care in making sure that your uvBeast arrives in perfect condition. We carry out before, during, and after production quality checking using industry best practices such as SPC and we'll be introducing Six Sigma.

Despite this we do accept that things may go wrong, whether inside or outside of our control. Our first reaction is not to make excuses, but to resolve the issue as best as we can, while at the same time learning about what can be done better.

This a list of the common issues faced and their remedies.

My UV flashlight won't turn on

Please take care when fitting the battery or batteries. Each battery must be fitted the right way around, and each of the two holders must also be fitted the right way around. If the LEDs do NOT work after battery installation please check for correct battery and battery holder polarity – each battery AND each holder must be correctly installed.

On about 95% of cases we've handled that have this issue, users have resolved this by replacing the batteries with a fresh set of new batteries. NOTE: Even "new" batteries can sometimes contain duds. A sure way of checking this is to use a voltmeter to measure the voltage of each new cell. It should read approximately 1.5 volts for an alkaline. It's easily overlooked, and why wouldn't it be, but it will save you time and hassle in the long run if you are able to resolve the issue immediately.

UV emission appears to be not all that strong (i.e. weak UV)

Firstly, the light output from a (non-visible) UV light will not be of comparable brightness to a regular white light flashlight. If it's your first time using UV please note that even a high intensity UV flashlight doesn't equate to a regular flashlight. Here's how to verify. Carry out a test with objects known to vividly fluoresce such as washed whites (garments), white paper, etc. If you don't see vivid fluorescence in these tests, then this is due to one of two things. A defective unit, or more likely, a battery issue. Our experience shows that the following test will resolve most cases.

Before contacting us regarding a defective unit, please try the following. Our past experience with the vast majority of our customers is that when the existing batteries have been all replaced with new and unused batteries from a different batch, it has in the vast majority of cases solved the problem. Please try the same, as it will help you to rule out a battery issue as well as save you the time, hassle, and frustration in getting a replacement unit. 

You may find that the 18650 batteries on some occasions are slightly difficult to remove from the tail end, after fully unscrewing and removing the tail cap. If this is the case, then please remove the 18650 batteries from the thread point which is located just before the logo area – it’s about an inch and a half past the tail end towards the logo area on the barrel. Grab that section and twist the lower part of the barrel counter-clockwise to unscrew. The battery compartment and hence the batteries can be easily removed this way. For an illustration of this please consult the User Manual available on this website. 

The reason for this is because the supplied 18650 cells are PROTECTED and because of those extra components inside the cell (i.e. the PCB), the diameter of the cell (as well as the length) can vary – albeit only very slightly.

Please follow these steps to ensure correct charging for the V3 models.

1. Connect the charger to a USB port or to the mains adapter. If connected to the mains adapter, then connect the mains adapter to a power supply socket.

2. The charge indicator lights on the charger will turn GREEN indicating that a supply current is detected. The two charging bays are empty at this stage.

3. Insert one or two batteries into the charger bays as required. Be sure to follow the correct orientation of both batteries which is illustrated in an etched diagram in the bay itself. 

4. When power is supplied to the charger, and with the batteries inserted correctly into the charger bays, the charge indicator light will turn RED (from green). When the indicator lights turn green (from red), this indicates that the batteries have completed the charge cycle (i.e. ~4.2 volts).

PLEASE NOTE: Sometimes, and especially on a first-time charge, charging can take a while. In some cases it can be 16 hours or more. This is because the charger is charging the batteries from a depleted state or has detected that that the batteries need to be charged at a slower rate in order to preserve the lithium ion cell chemistry. However, after this charging will resume to normal charge times of around 4 hours

Spare O-rings can be found in the internal packaging - sometimes these can be located with the extension barrel for relevant models. With most models you will find O-rings in the packaging. These are spares that we have included for you. (Please note that O-rings are already fitted in your uvBeast device).

You may use the spares when the original fitted O-rings either get inadvertently damaged during battery replacement or otherwise. To ensure that you get the longest lifetime from the O-rings, apply a suitable lubricant such as petroleum jelly to the O-rings prior to fitting. Petroleum based lubricants are better since the O-rings are silicone. You may apply lubricant in-situ to the existing O-rings to prolong their life. 

The purpose of the UV glasses provided with some models is primarily for enhanced and amplified viewing of fluorescence (i.e. the items of interest that you want to see). This is particularly effective when (1) traces of fluorescence and/or excitation effects are weak and hard to otherwise spot, and (2) when conditions in the environment present high color “noise”. In addition, our glasses will sharpen and clarify the viewed surroundings and will show any reaction to the UV light i.e. fluorescence, with sharper contrast.

The secondary purpose is to reduce glare and discomfort (by the 385-395nm wavelength range) the user may experience when using the uvBeast especially during prolonged periods. The purple visible wavelength from the uvBeast 385-395nm models can sometimes be slightly overwhelming when against certain backgrounds and substrates.

These glasses were primarily designed to filter out interfering visible wavelengths from the beam of some models of the uvBeast which are in the longer wavelengths (above 365nm). This spectral distribution is a normal characteristic of LED technology as opposed to laser diode technology, and visible light from the uvBeast only comprises a small amount of flux relative to the entire spectral output.

The color tint of the glasses are of a special formula adjusted to the uvBeast’s spectral emission and distribution flux, where transmission of the appropriate and wanted wavelengths are either granted or denied transmission.

(For further information please “Is UV harmful to my eyes” in the Help Center).

(As a background please also see article “Is UV harmful to my eyes?”)

With regards to the uvBeast V3 365nm and the V3 365nm MINI, we do not offer the UV glasses with this product. The reason is because with these particular UV flashlights they are not needed. With our other models we do provide glasses since these emit a higher wavelength of 385-395nm UV. This higher wavelength contains majority UV but since it is close to visible light (~400nm) there is visible light emission.

This visible light (pertaining to 385-395nm models) can cause eye fatigue for some users after prolonged use. So the glasses assist in preventing that. Also, another function of the glasses is to block out visible light interference when observing fluorescence where sometimes and on some target objects it can be difficult to distinguish objects which are fluorescing, and the purple visible light interference emitted from UV flashlights at 385-395nm wavelength.

So, coming back to the uvBeast 365nm UV flashlight models. This flashlight emits a lower and more pure wavelength of UV at 365nm wavelength and consequently doesn't emit anywhere as much visible light and so therefore the glasses are not needed for this particular flashlight.

In addition, UV is classified into longwave and shortwave. Longwave UV also known as UVA is not harmful to skin nor eyes. Longwave UV (UVA) is ~300nm and above, and so the V3 365nm flashlight emits longwave (UVA) UV light which is not dangerous. Shortwave UV however aka UVB and UVC, is harmful due to the shorter wavelength, and is ~300nm and below. This type of shortwave UV has the known ability to damage human DNA (cancerous), and so therefore is treated with extreme caution.

Having said that, as with any powerful flashlight - including white light flashlights - looking at the beam directly will cause discomfort and so like white light flashlights should be used responsibly.

User Manuals can be found by clicking the link below.

User Manuals

No. They are different because they emit UV at different wavelengths. The filter is not causing the difference in wavelengths, the LEDs are. The two models have different LEDs. So the real difference is in the UV wavelength, and the filter on the V3 365nm acts to accentuate the 365nm UV wavelength.

With the V3 385-395nm model, there is “no” 365nm emitted in the first place. (We say “no” but in reality there is some flux in that region but it isn’t significant relative to the majority 385-395nm wavelength). In other words, by simply fitting a filter to the 385-395nm will NOT give you the same wavelength as the V3 365m and therefore it will not give you the same results. 

The difference between 365nm and the 385-395nm ultraviolet is that you’ll get different results. Not necessarily better, but different, since it depends on your usage. For forensic type work, professional stain detection, geology, cell staining, leakage detection, NDT, or in applications where you need high contrast in fluorescence, the 365nm is a sought after wavelength. Also, bear in mind that some substances will only show up under 365nm UV, so that is also a key consideration. Artwork and antique appraisal is a good use case example. The 385-395nm wavelength is sometimes preferred for applications which need higher intensity UV where the higher wavelength will also perform. For example, miners, engineers, fishermen, fossil hunters, bone identification (human and otherwise), and scorpion hunters - to name a few user types - may prefer the longer wavelength and pound-for-pound higher relative UV intensity for longer range applications.

Please see below. Distances from light source are approx. 24 inches.

Stock is in the US and ships from the US. We do have plans to be able to ship outside of the US. If you're in the US you'll get fast and free shipping. For the time being, for international shipping please try our stores on Amazon US and eBay US.

Standard Shipping is 5-8 business days (FREE)

Expedited Shipping is  3-5 business days

Priority Shipping is 1-3 business days

PLEASE NOTE: Unlikely and infrequently, sometimes due to events outside of our control delivery logistics times may vary, but we'll always do our best to make sure we get your items to you. 

For all purchases from us at uvBeast.com you will receive an email and/or SMS to track your orders in the follow-up contact we make with you after placing your order with us. Please check for tracking updates.

PLEASE NOTE: Due to COVID-19 still impacting the logistics network throughout, orders may face some delay. Carriers may need to change routes to ensure that your purchase is delivered as fast as possible.

My Order Was Not Received

This could be due to a few reasons. The first thing to do is to check the tracking number for the delivery. If it shows that it has not been delivered then it is likely still on its way. It may have got delayed due to unforeseen circumstances. However, if it's been more than what can be considered as a reasonable time for arrival, then check with the carrier. 

If your tracking information shows that your package was delivered, but you can't find it (then within 36 hours of expected delivery) please:

Verify the shipping address

Look for a notice of attempted delivery

Look around the delivery location for your package

See if someone else accepted the delivery

Some packages travel through multiple carriers; check your mailbox or wherever else you receive mail. Wait 36 hours - in rare cases packages may say delivered up to 36 hours prior to arrival. Outside of this, contact the shipping carrier.

Your Order Could be Undeliverable 

Here are some reasons why sometimes your order cannot be delivered. Please check and ensure that none of these are present, or none of these reasons have caused your order not to have been received by you:

Item is too big for a P.O. Box. Some items are too big to ship to a P.O. Box and must be shipped to a street address.

Incorrect Address/Missing Information. The package is typically returned by the carrier or the unintended recipient if the address is incorrect, has typos, is missing information (such as an apartment number or ZIP code), or is outdated (such as a previous residence).

Address Format. If a post office box address was entered in a format our system does not recognize, the package may be shipped through a carrier that cannot deliver to a post office box. To ensure that such packages are routed through the proper carriers, please enter the box number as "PO BOX" followed by the number. Also, if you're a private mailbox holder (use a local commercial mail receiving agency), do not use "Box" for your mailbox number, instead use # or PMB. This will ensure that your address is not mistaken to be a P.O. Box, and that orders can ship to you via means other than the U.S. Postal Service. 

Secure Location. Your package may be returned to us if there is no safe place to leave the package at the point of delivery, where the package is safe from weather and is not visible to passers by.

Unable to Access. Your package may be returned to if the carrier can't access the delivery location due to no access code, call box number, or buzzer information, and can't obtain the information after multiple attempts.

Other Address Problems. If the order is being shipped to a prison, there may be delivery restrictions associated with the items or shippers These restrictions are determined by the penitentiary and may vary. Many items can be shipped to Department of State addresses, however, some cannot and will be returned as a result. For a full list of shipping restrictions at a specific DOS address, please contact the DOS facilities staff at that location.

Failed Delivery Attempts. Most carriers make three attempts to deliver a package. Packages that contain more than $1300 of merchandise will always require a signature; otherwise, it is generally up to the driver's discretion to determine whether a signature is required. After three attempts, the package will be returned.

Damaged During Transit. If a package is damaged on its way to you, the shipper may return it without attempting delivery.

Other Transportation Problems. Packages can be sorted to the wrong carrier or labels can be damaged such that the carrier is unable to determine the correct delivery address.

Refused by Recipient. If a recipient is not expecting a package, they may refuse it if they believe it was sent to them in error.