301 of 305 people found the following review helpful
on August 31, 2011
These simply work. Used them extensively in the military.
One thing I will add to your purchase consideration: the Cyalume SnapLight "Industrial" Grade Chemical Light Sticks lights are chemically very similar to the "Military Grade", but with a longer shelf-life. The "military grade" lights are formulated per DoD specification, and as such cannot take advantage of newer formulations.
In short: if you are buying the "Military Grade" lights because you think they are better somehow, they are not. They are the same brightness. As a matter of fact, according to the manufacturer the military versions have one year less shelf life (4 versus 5 years for the industrial series). The higher price reflects the custom (older) formulation that the DoD specifies.
Source for this info: Cyalume Corporation.
So unless you are required to buy an NSN product, do yourself a favor and pay less for a longer shelf-life and get the industrial version of this product.
Hope this helps.
119 of 119 people found the following review helpful
on February 24, 2013
Having spent 32 years with the military, I'm quite familiar with "ChemLights" which is the military term for these 12-hour light sticks. I noted that one reviewer was less then happy with the illumination capabilities of the red ChemLights. Yes, if you're looking to illuminate a large area or even a two person tent in a safe and secure area, red is probably not the best choice in colors. On the other hand, if you're looking for a ChemLight which doesn't draw as much attention to your position and is more difficult for animals and humans to see, red is the preferred color. It's for up close and personal use such as map reading or marking a location without becoming a light house beacon. It also does not attract as many - if any - night time animal and insect visitors. If there's information to be considered in this review, it's suggested that selecting a color in ChemLights should include an assessment of situation, application and desired results.
136 of 138 people found the following review helpful
on December 5, 2011
These are top of the line light sticks. I used cases of the military version in the Army and these are the same thing made by the same company just the civilian version.
The civilian version (SnapLight) is better then the military version (ChemLight) as the civilian version has all the latest composition and chemistry updates allowing for more brightness and shelf life longevity (5 year as compared to 4 for the ChemLights). This is because ChemLights are required to meet a DoD standard that locks them in to an older chemistry configuration.
I keep them in my camping and emergency kits.
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243 of 254 people found the following review helpful
on February 19, 2010
I'm the kind of person who likes to test their gear before relying on it in the backwoods, so I cracked one of these as soon as I opened the package. I was easily able to navigate around a pitch-black house and yard, without the benefit of any other artificial light. It was brighter than other glow sticks I've tried (Coleman brand, for example), and was still putting out enough light to read by a full 12 hours later. The plastic walls are angled instead of round, and are thicker than any others I've tried, which means they should hold up well against accidental cracking in the backpack. No lanyards are included, FYI, but I don't consider that too much of a detriment. Overall: great product, very reasonable price.
141 of 152 people found the following review helpful
on May 24, 2012
I bought sets of several colors of these Cyalume SnapLight Industrial Grade Chemical Light Sticks, for emergency preparedness and the first night of having them, I opened up each color and activated each one.
Quickly, I'll just say that these seem to be pretty standard, if rugged, light sticks. They're a bit thicker than what I've typically seen kids playing with at 4th of July fireworks shows and the like, but basically they are what they are. Light sticks, with perhaps an industrial use slant. This is the first time I've bought light sticks, so I can't really speak to price.
Anyway, what you probably care most about, here, is the brightness. On first snapping of the stick, they will certainly light up a small room, well enough to see clearly. After an hour, however, you'll probably be stumbling around in the dark unless you're holding it in front of you, these are quite dimmer than a candle flame. As time goes on, the light will get dimmer and dimmer. Put a few down on sharp corners, and you'll avoid smacking into anything in the dark and hurting yourself, but after a few hours you're basically just using these as signal flares, rather than a source of good working illumination. There will certainly be a glow inside the stick for many hours, perhaps even 12 as advertised, but the nature of the chemistry is such that the strongest brightness will be at the beginning, and it will taper off from there. As you approach the 12 hour mark you can probably read a book with it, if you hold it right up against the page, but that's probably about it.
So, which color is brightest? They're all about the same, I would say, at least of the ones advertised at 12 hours. But, bear in mind, the human eye is tuned more to see shades of color closer to the green part of the spectrum. That's just how we evolved with our green-tinted world. Night vision goggles use green phosphors so users can see better, and lights backstage at a theater are red so they don't spill out onto the stage and disturb the audience. While any color of light stick you might buy is probably about the same brightness, your eyes will see much better if you get the green light stick. Yellow is quite good too. Orange seems a bit dimmer. Red is the hardest to see with. That's not to say red light sticks aren't just as visible at a distance, but they will be harder to use as sources of light to brighten your surroundings. That's just the way our eyes work.
So, just buy green? I don't know if that's my advice. Hiking at night, I think attaching (with the convenient hooks) red light sticks to each member of a group would help keep people from getting lost, without ruining anyone's night vision. Orange might be good to mark the trail to the outhouse with. Green or yellow might be best to read with in your tent. The different colors might also be used to indicate different things. The nice thing about these light sticks is they come in all sorts of colors, so you can figure out how best to use them, yourself.
48 of 49 people found the following review helpful
on December 9, 2010
So I wanted some decent snap lights for my car, camper, and home. You know the drill, the power goes out and the flashlight batteries are dead because you forgot to check them. No problem, you've got SnapLight by Cyalume. These put off a nice yellow light the is plenty to illuminate a stairway or small room. Two or three can illuminate a big one enough to see obsticles and people. So why by Cymalume rather than the "cheaper" brands. First off, they aren't that much cheaper. Seriously, $3??? You'll waste that at the snack/soda machine today at work. Next the brightness and life. As I said, I personally opted for yellow. It's a pretty well known fact that humans see yellow light brighter than any other color, so it just makes good sense. Next these are brighter than the cheapies you get your kids at the fair. And finally, although they steadily loose their brightness as the chemical reaction rages on, they put off a stong ammount of light for about 3 hours and good light for about 7. By 11 their pretty dim. The shelf life on them is five years so it's a cheap investment should you not need them, but trust me, you will...
124 of 135 people found the following review helpful
on June 10, 2011
Longer lasting than solar-power.
Longer lasting than crank-power.
Longer lasting than shake-power.
Longer lasting than battery-power.
Not as bright,
but you can leave this on when you nap,
and wake up in the light instead of in the dark.
Blue is the best for romance.
Yellow is the best for seeing.
Red preserves nite-vision and hides wrinkles.
When used as a bobber, green acts as a lure during night fishing.
Kids love playing with these in the pool at sunset.
Can be used as a foot-lamp when lowered on the 13" sold-seperate companion:Garmin 013-00052-00 Lanyard, Etrex
I wish I had these in the Boy Scouts.
I wish I had these in the war.
I might be spending too much time in the deep dark woods.
30 of 30 people found the following review helpful
on July 28, 2012
Reviewing color: Yellow
At over a dollar each these are best for emergency use or as a safety light for a Halloween night. I tested one and for the first 15 minutes it gives off light equal to about 1/2 the light of a standard night light. For those roughly 15 minutes, you can read black and white about a foot away from the light source. After that the stick starts to dim to a low glow until the only visible light is of the liquid in the stick. Technically it will last 12 hours, but realistically the light stick is only useful for a short time under most situations. Unless you are in a harsh environment where flashlights won't cut it, these are not a necessary item to have as a light source for most emergencies.
Instant emergency light that can be used in almost any type of environment.
Good to get attention/warn others in a dark/harsh environment while liquid is at its peak.
While the stick is 6 inches from hook to base, the amount of illuminated liquid when completely mixed is just over 3.5 inches.
Price, at over a dollar each there are longer lasting reusable light sources you can obtain for emergency use.
Duration of "useful" light much shorter than advertised.
Since it's that time of the year, I decided to do another test of these light sticks to be sure I was giving it a fair review. Testing the same color (Yellow) I combined the liquid and early in the test the stick was bright, almost nearing the light given off by a night light. But within 30 minutes the brightness diminished and became a steady glow. An hour into monitoring, in a dark 5x10 room with no internal/external light sources the light stick could barely illuminate half the room, which at this point was about half the light given off by a night light.
One observation while testing this in a dark room was that the higher I held the stick, the less light that was directed straight down from the stick, which counteracts the purpose of hanging this stick using the hook. It would appear to be better to hang the stick parallel to the floor due to the design. After checking the stick at the 12 hour mark, the liquid was completely dark.
I really would like to give this more stars as it does do what it is intended to do, but for an item that could be potentially used in an emergency situation to save lives, the claims of this lasting up to 12 hours is still overly exaggerated. While it may be possible to have a stick last that long, realistically I would put this more in the 6-8 hours range at most.
54 of 58 people found the following review helpful
I always keep some snap light sticks in the house for power outages and sleepovers. We've had every color, but these white ones are the best. They last a full 8 hours and we haven't had any "duds" in the pack. The white light glows brighter than red, yellow, green, and blue, and help take the scary out of dark rooms. I give them to our kids when they have kids sleeping over, or when they sleep out in the yard in the tent, to save on flashlight batteries.
Because they're sealed and basically unbreakable, and they don't get hot, they are safe for kids to use unsupervised. From a power outage standpoint, they're safer than a candle or a lantern for getting around a dark house. An added bonus is the hole at the end, which allows the user to attach a lanyard and free up their hands.
307 of 358 people found the following review helpful
on July 15, 2010
The picture with the "Snaplight" word is not the product that I received. Instead, I received a similar product of the "Mayday" brand with a different packaging.
The Snaplight brand is from Cyalume, a more expensive brand. Even though this seller did not put Cyalume anywhere in the description, the pictures are misleading and false. The Snaplight brand also shows a yellow packaging with yellow light which doesn't match the green light description.
The product works and glows but not as brightly as Cyalume or other brands. You get what you paid for.