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by Cyalume

Cyalume SnapLight Industrial Grade Chemical Light Sticks, Yellow, 6" Long, 12 Hour Duration (Pack of 10)

4.6 out of 5 stars 254 customer reviews
| 7 answered questions

List Price: $23.14
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Specifications for this item
Brand Name Cyalume
Color Yellow
Import Designation Made in USA
Number of Items 10
Overall Length 6  inches
Part Number 9-08004
Shape Duration: 12 Hour
Size 10
UNSPSC Code 39111705

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Product Features

  • SnapLight industrial grade yellow light stick for providing illumination for up to 12 hours
  • Measures 6" long and provides 360 degrees of illumination
  • Hook and gate top for hanging or attaching the light
  • Chemiluminescent substance is non-toxic and plastic body is phthalate free for safety
  • Five-year shelf life from date of manufacture for a maintenance-free alternative to other lighting


Product Details

Material Safety Data Sheet [43kb PDF]
  • Product Dimensions: 0.5 x 0.5 x 6 inches
  • Shipping Weight: 8.5 ounces (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B004NBZLK6
  • Item model number: 9-08004
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (254 customer reviews)
  • Amazon Best Sellers Rank: #1,132 in Industrial & Scientific (See Top 100 in Industrial & Scientific)

Frequently Bought Together

  • Cyalume SnapLight Industrial Grade Chemical Light Sticks, Yellow, 6" Long, 12 Hour Duration (Pack of 10)
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  • Cyalume SnapLight Industrial Grade Light Sticks, Green, 6" Long, 12 Hour Duration (Pack of 10)
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Total price: $29.23
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Product Description

The Cyalume SnapLight is a yellow industrial grade chemical light stick measuring 6" long, for providing instant 360 degree illumination, that can be seen up to a mile away for up to 12 hours in optimal conditions. The SnapLight 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. Each light stick is individually foil-wrapped for protection from light and moisture, and has up to a five-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 components of the light stick are recyclable. The light stick floats in water and works best between 40 to 80 degrees F (4 to 27 degrees C), and although 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 therefore the brightness 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 to soften the plastic tube, and increase the risk 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 produce some light, but performance will not be as reliable. Humidity and atmospheric conditions do not affect the light sticks.


Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Verified Purchase
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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Verified Purchase
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.

Pros:

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.

Cons:

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.

UPDATE: October

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.
Read more ›
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Verified Purchase
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...
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Verified Purchase
I always keep Cyalume snap light sticks in the house for power outages and sleepovers. We've had every color, but we like these yellow ones the best. The white ones are our second choice, but their light doesn't last as long. The yellow ones last up to 12 hours and we haven't had any "duds" in the pack. We bought some of the cheap ones at Walmart once, and half of them had either been snapped at the store, or they were duds. Since you won't know if they work until you snap them yourselves, it pays to avoid buying them from stores where people can handle them.

These snap sticks help take the scary out of the dark - I give them to our kids when they have friends 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. We give one to each kid when the power is out, and it helps them feel secure and able to sleep in their own beds. An added bonus is the hole at the end, which allows the user to attach a lanyard and free up their hands.
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Verified Purchase
Got this for our emergency kit. Read that it's a good idea to have one in your bedroom with a front-door key attached in case of fire or other emergency - then you can throw it out the window and notify emergency personnel where it is.
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Nice Lights. Brighter than the ones you can get at most stores. Lasts 12 hours at full power, but up to 24 total even though it loses its brightness. No complaints, works to expectations.
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