UV - streamlight 51018 or something else?


Flashlight Enthusiast
Apr 26, 2013
Found an old Sears gift card that I'd never used, and searched online to see if Sears had AAA Eneloops which I still need... they do! (well, not really, but I can order them online and use a sears gift card. I paid a *little* more than the going rate, but I am really searching for something to use the gift card on.

I've also been in need of a UV light for a while and saw they offered the Streamlight 51018 "Twin-Task" titanium light. It looks like it is a 390nm light. Question is should I buy that as well or just save my money because I won't be happy with it?

For all questions please select all that apply.

1) How would you prefer to purchase the light?

____I would like to purchase the light from a brick and mortar store. I am located in ______________.
__x__I will be mail-ordering or buying online, so this doesn't matter.

2) Budget: An easy question, but you may change your mind after answering the rest! :)

____Less than $25.
____Less than $50.
__x__Less than $100.
____Less than $150.
____Less than $300.
____I have no limit.
____I’m flexible, tell me what you gotJ.
____Other, please specify ________

3) Format:

__x__I want a flashlight.
____I want a headlamp.
____I want a lantern.
____I want a dive light.
____I want a portable spotlight.

4) Flashlight-specific format/size:

____Keychain size.
____Every day carry small (2-4 inches).
____Every day carry medium (4-7 inches).
____Holster carry.
____Big enough to need its own travel caseJ.
__x__I don’t care.
____I don’t know.

5) Emitter/Light source:

____LED (known for efficiency, longevity, and compactness)
____Incandescent (known for superior color rendition)
____HID (known for max output, but often at the expense of size)
__x__I don't know.

6) Manufacturer:

____I want to buy a light from a traditional mass producing manufacturer that is ready to go out of the box.
__x__I would consider getting a light that is pieced together (for example a “host” or flashlight body from one manufacturer, and a “drop-in” emitter from another source). Under the right circumstances, this path can provide more options to the consumer to meet specific needs, and can often be easily upgradeable as technology improves.

7) What battery type do you want to use?

____I intend to use alkaline batteries (AAA, AA, C, D) (disclaimer, while it does not preclude all choices, these are not recommended for many of today’s most powerful lights)
__x__I intend to use rechargeable nickel chemistry (NiCad, NiMH, NiZn)
____I intend to use lithium primary batteries (CR123, CR2, Energizer Advanced/Ultimate Lithium AA/AAA)
__x__I intend to use rechargeable lithium (li-ion) chemistry. Feel free to specify a size if you know which size you want (14500, RCR123/16340, 17500, 17670, 18650, etc.)
____I want a light with an integrated rechargeable battery. (Note: these choices may be very limited unless you are looking at spotlights)

8) How much genuine out the front (OTF) light do you want/need? Sometimes you can have too much light (trying to read up close up with a 100 lumen light is impossible).

really want a UV light not a visible light, so irrelevant. But I do want the light to be suitable for my use.

9) Throw vs. Flood: At what distance will you be most likely to use this light? Select all that apply.

____Less than 1 yard/meter (reading, other close work)
__x__Less than 5 yards/meters (looking for something inside a dark shed/garage/basement)
____5-20 yards/meters (check out a noise in the backyard)
____30-50 yards/meters (I have a big backyard)
____50-150 yards/meters (I live in a very rural area/farm with wide open spaces)
____150+ yards (I want maximum throw possible)

10) Runtime: Not over-inflated manufacturer runtime claims, but usable brightness measured from first activation to 50% with new batteries (Measured on maximum output).

____Up to 30 minutes (I want the brightest [and potentially smallest] light for brief periods)
____30-60 minutes (I have plenty of batteries just ready to be changed)
__x__90-120 minutes (Runtime is moderately important, but still not critical)
____3 hours + (I critically need this light to run on max for extended periods in between battery changes/charges).

11) Durability/Usage: Generally the old phrase “you get what you pay for” is very accurate for flashlights.

____Not Important (A “night-stand” light).
____Slightly Important (Walks around the neighborhood).
__x__Very Important (Camping, Backpacking, Car Glove-box).
____Critical (Police, Fire, Search & Rescue, Caving, Survival).
____I don't care.
____I don’t know.

12) Switch Type and location (choose all that apply):

____I want a forward clicky (Helpful for momentary activation and signaling).
____I want a reverse clicky (For use with multi-mode/level lights).
____I want a momentary switch (Predominantly for use with signaling and short bursts of momentary light only).
____I want a twisty switch (Tighten the head/tailcap to activate, and the light will stay on until the head/tailcap is loosened).
____I want a body mounted switch (near the head, like on a Maglite).
____I want a tail mounted switch (found on the majority of today’s high end lights).
__x__I don't care.
____I don’t know.
____Other, please specify____________________.

13) User Interface (UI) and mode selection. Select all that apply.

__x__A simple on-off with only one output level is fine for me.
____I want 2 light levels. (Brighter/short runtime and Dimmer/long runtime.)
____I want multiple light levels. (Some lights have 5-16 light levels.)
____I want a programmable light.
____I want a selector ring.
____I want a strobe mode. (Blinks to show location.)
____I want SOS mode.
____I want a beacon mode.
__x__I don’t care.
____I don’t know.


____Plastic/composite body (this may limit your choices significantly).
____Anodized Aluminum – either type II or III (Hard Anodized) (Aluminum, specifically HA, is the most common material/finish for today’s flashlights).
____Stainless steel (durable, but much heavier than aluminum)
____Titanium (durable and nearly as lightweight as aluminum, but can be moderately to significantly more expensive).
__x__I don’t care.
____I don’t know.
____Other, please specify____________.

15) Special Needs/extras: Is there anything else you want or need that hasn't been mentioned? Select any below.

looking for a UV lamp, primarily for the purpose of lighting up leak detection dye in automotive and residential A/C units. Also for nauseating myself for fun and enjoyment when staying in a hotel.


Flashlight Enthusiast
Apr 26, 2013
after googling some I'm now leaning more towards the "night com UV"


downside is that then I'd have to invest in a couple 17670s but I suppose I could use them in my 6P (but I already have RCR123As for that... d'oh)

multi-ops is also an option (can't find a review) but that only has one UV wavelength - but I could use Eneloops

again, I'm hoping for something that I can use to burn up a Sears gift card on... I already have tons (literally) of hand tools