Most helpful customer reviews
6 of 6 people found the following review helpful.
 Now THIS is a glow stick
By Matt McCann
I purchased a number of different glow sticks at various price points, and these are by far the best and brightest. Twice as bright as the cheaper ones, and longer lasting.
Also much more expensive, but for an emergency kit, worth the premium. I did a side-by-side test, this brand and 2 cheaper ones. At activation this one was clearly MUCH brighter than the other two. Twice as bright would not be a big stretch. An hour after activation, this one was just as bright, the cheapies had dimmed considerably. Not even a close race.
My ONLY complaint (besides the price) is that they are individually wrapped – which by itself isn’t a bad thing, but the wrapper is awfully tough to open in full daylight. I can only imagine what it would be like in patch darkness. Something to think about if you’re putting them somewhere you can easily reach them in the dark.
5 of 5 people found the following review helpful.
Great Product! Great Expiration Date!
By PracticalPete
The chemlight sticks are military grade and are exactly what I needed. The expiration date on the sticks are nearly 4 years away! I have not found that length of time on any sticks in nearby stores that carried subpar chemlights!
3 of 3 people found the following review helpful.
Worth the price
By Unlucky
I guess it’s military grade for a reason. Well worth the price. Bought these for a camping trip. Compared against other folks’ light sticks at camp, these were brighter (way brighter) and larger. Used them starting around 9pm and they were still bright the next morning at 9 so they definitely lasted more than 12 hours.
See all 6 customer reviews…
Genius Pf A01 10 4 Inch 43 Format Digital
The Cyalume ChemLight is a green military grade chemical light stick measuring 6″ long, for supplying instant 360 degree illumination, that may be seen up to a mile away for up to 12 hours in optimal conditions. The ChemLight is waterproof, non-toxic, and non-flammable. To activate the light stick, bend, snap and shake the tube. The light stick has a hook and gate top, for hanging or attaching the light. The ChemLight meets Defense Logistics Agency (DLA) and NATO Maintenance and Supply Agency (NAMSA) specifications, and National/NATO Stock Numbers (NSN) are printed on each product. Each light stick is on an individual basis foil-wrapped for shelter from light and moisture, and has up to a four-year shelf life from date of manufacture.
The durable, waterproof, external body of the light stick is made from low density polyethylene (LDPE), and is phthalate free for safety. The internal illuminating chemical substance is non-toxic and non-flammable, and the constituents of the light stick are recyclable. The light stick floats in water and works best amongst 40 to 80 degrees F (4 to 27 degrees C), and even though the light stick works at higher or lower temperatures, it is less effective in colder temperatures.
All sticks are tested at a temperature of 72 degrees F (22 degrees C) to determine the illumination duration. Each 10-degree C (50-degree F) increase or decrease in temperature doubles or halves the reaction rate, and consequently the luminance and duration. For example, the same light stick that emits approximately 30 lux (a unit that describes how much light is visible over a square meter) at 15 minutes after activation at 24 degrees C (75 degrees F) will be half as bright but glow twice as long at 14 degrees C (57 degrees F). At 34 degrees C (93 degrees F), the same light stick would be twice as bright, but glow half as long. Storage at elevated temperatures (above 120 degrees F or 49 degrees C) will decrease shelf life and start out to soften the plastic tube, and increase the danger of a leak. Exposure to cold temperatures will not affect the light sticks if they are warmed above 40 degrees F (4.5 degrees C) before activation, unless they are frozen (which occurs at -15 to -20 degrees F, or -26 to -29 degrees C). Once light sticks have been frozen, they will still invent a great deal of light, but performance will not be as reliable. Humidity and atmospheric conditions do not affect the light sticks.
Light sticks are chemiluminescent substances in plastic tubes that provide hours of illumination in a number of safety, industrial, and military applications. Light sticks are waterproof, non-flammable, and non-sparking, which makes them utile in highrisk situations where sparks or flame could cause an explosion. Duration is determined by the alchemy of the formulation. Brightness is affected by temperature: the warmer the temperature, the more glorious the light will appear. All sticks are tested at a temperature of 72 degrees F to determine the illumination duration. Viewing distance may be affected by temperature, moisture, and other elements. Exposure to direct sunlight may reduce shelf life and effectiveness.
Cyalume Technologies manufactures chemiluminescent merchandise used for safety, industrial, and military applications. The company, founded in 1970 and headquartered in West Springfield, MA, makes productions underneath ChemLight and SnapLight brands. ChemLight merchandise meet military specifications, and the company meets ISO 9001 standards.
What’s in the Box?
- 10 on an individual basis foil-wrapped light sticks
Genius Pf A01 10 4 Inch 43 Format Digital Picture
Genius Pf A01 10 4 Inch 43 Format Digital Picture
Genius Pf A01 10 4 Inch 43 Format Digital Picture
Genius Pf A01 10 4 Inch 43 Format Digital Picture
Genius Pf A01 10 4 Inch 43 Format Digital Image
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