To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
These glow sticks are great. I am an army veteran and I usually purchase chem sticks from army surplus stores but I will order these sticks from now on. Great price, individually wrapped, perfect glow, and they do last for 12 hours. The first six hours is maximum glow. The last six hours the glow starts to dim slowly. There is still a dim glow (no lighting effect) 13 hours later. When I don't need light I can safely throw it in a drawer. I love the fact that my children can safely play with them or fall asleep with them in their rooms. When I break the capsule inside I normally shake it for 30 seconds and they get super bright. I have read some less than positive reviews about this product but it certainly gets 5 stars from my point of view. I have already ordered more.
I bought a 12-pack of these Glow Mind sticks and a 20-pack of Cyalume brand (https://www.amazon.com/gp/product/B010S58CX8/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1) to get the price per stick as close as possible, thinking that USA-made Cyalume branded sticks would be superior to these lesser-known Chinese "Glow Mind" brand. The expiration date on the package is 07/23. The Cyalume brand expire a year later on 7/24. I snapped an example from each package at exactly the same time, and checked them 4, 8 and 12 and 16 hours later. At every stage, the Chinese-made Glow Mind sticks were brighter. At 16 hours, four hours beyond rating for either product, the Glow Mind stick viewed next to the the Cyalume stick was roughly 1.5x as bright as the Cyalume, though both were quite dim. I did the viewing in a dark closet. The Glow Mind product is $1.08 each in the 12-pack on the date of purchase. The Cyalume product is $0.99 each on the date of purchase, but I had to buy the 20-pack to get that price. One of my kids thought that the Cyalume product had more fluid overall, but I pointed out that the Cyalume sticks have fluid from the very bottom of the stick upward, while the Glow Mind sticks have a short unfilled base. When accounting for the base, the fluid fill is as near identical in both products as far as can be observed without breaking them open to get a fluid measurement. Both products are individually wrapped in foil/plastic tubes, with the Glow Mind being boxed and the Cyalume being bagged. See images. The Cyalume product is hexagonal while the Glow Mind is round. Both have an eyelet and a hook at the top for hanging. The Cyalume product is marked "Made in the USA" and the Glow Mind product is marked "Made in China." Sadly, the Chinese product outperforms the USA product in initial brightness and in residual brightness throughout the 16-hour evaluation period. The Cyalumes DID arrive with an additional year on the expiration date over the Glow Mind, but I'm not sure that matters much: I bought both of these products to replace USA-made Ameriglo product that I expended during a recent overnight power failure, and those provided useful light over the 8 hours of the power outage even though they had reached their expiration date in February of 2015, almost five years ago. Glow Mind for me, going forward.
There is nothing "Industrial" about these Glow sticks. I could by the same type, size, and duration at a cheap store or Walmart. Really bright for about 20 minutes, then average at best. Won't light up a completely dark room, but you can use it as a night or low light marker. One plus, it did last for just over 24 hours being visible.
I am fascinated by glow sticks. Bend it, shake it, and poof, there is light. Its really bright and very convenient. I purchased these to go in various places that I might need emergency light, like my car, and my emergency Go Bag. I have to say that I'm disappointed because they do have an expiration date to them. I was hoping that they would be good for a long long time as long as they had not been activated by the bend, snap, and shake. These that I bought are good through 11/2023, which is three years from now. It has the manufacturer date on each individual stick package of 11/2019 and the expiration date of 11/2023. I was really hoping that it would be different than batteries, which can lose power over time just sitting idle. I wish there had been a statement on the product page as I don't think I would have bought two boxes. If it is on the product page, I missed it. Just keep that in mind when you order that they have a limited life span even if just sitting in the box not being used. As far as being good for emergency light, what makes them so perfect is their light weight and easy to carry. You can easily keep them in places where light would be needed, but you don't have electric power close by.
Cyalume type break and shake cold lights are all pretty similar. These were $10.95 for a 12 pack delivered in one day. What surprised me most was that although touted to last 12 hours the one I tested lasted all night, was easily visible all the next day in a brightly lit room, was still giving enough light to navigate in pitch darkness at 24 hours and only lost its light completely after a full 36 hours. Excellent. I put some in my bug out bag, some in my car, couple in tackle box, one in kitchen drawer, one in nightstand, etc. Will be buying more.
Kept them in my car for any bad event that might happen during m long road trips. Unfortunately, last night an accident happen d just a few minutes before I arrived to the scene and was the first one there. Called 911 and immediately throw 3-4 of these glow stick on the highway since two passengers in the car where Couldn’t get out of it. Also hold one in my hand and shakes to coming traffic until the police arrived. I believe that these glow sticks provided themselves very well!
Sizable, Sustained Intensity, and for Cheap: Bigger, brighter, and longer-lived than the Cyanamid classic version that we all loved in the early 1980s when these types of chemiluminescent things were first marketed as toys. Keep these around for emergencies, or for the kids to have fun with. Either way it's a great deal: cheaper, per unit, than we paid beachside 35 years ago.
Pretty Darn Safe: Another literal STRONGpoint...seems to me that the plastic enclosing the glowing solution is plenty thick and heavy enough to keep most kids from chewing through it, should yours be prone to chew on plastic stuff. (With the cheaper little glow-in-the-dark bracelets and necklaces, it's not too difficult to chew through and release the bitter glowing liquid and remnants of the glass vial that's left behind...danger there!!!) **If perchance you're raising a baby wolf, it's likely your little one will chew through these massive lightsticks, so leave 'em safely in the PACK.**
Stable Nuclei: The best thing is, this product is not radioactive within the limits of my detection tools. I must be a true geek because I tested this -- knowing darn well that it would come up clean for radioisotopes -- but not admitting that result to myself in advance, because of course I didn't want to bias the radioactivity data collection. :) It's chemiluminescence at work. With this product, the massive collection of nuclei and electrons that I call "me," and the nuclei in my lightsticks, too, will continue to obey the original unappended versions of the laws of conservation of matter and energy, at my basal rate, even when I use this amazing product! How's that for safety?
They work great; just as expected. I mean, it’s a glow stick... not a robot vacuum… but for people who like to look at these reviews, I will say that I looked at a lot of different glow sticks and these were packaged nicely, really bright, and they lasted for many hours… Obviously they start to dim after a while, but I would say you get four hours a solid bright light before it starts fading slowly over the next four hours... do you really need a glow stick to last longer than that anyway? perhaps if you are an underwater cave diver or a coal miner, you might want to spend a little more money, but I think this will suffice for the average consumer, LOL. It will last for almost any general purpose throughout a typical evening if you are experiencing something like a power outage or want to use these on a camping trip.
My review is not to discourage the manufacturers of this wonderful product. In truth, I hope my review is taken as a challenge that they can give everyone a better product. The brightness of the chem stick was wonderful for the first three to four hours, then it gradually dimmed.
For someone like me, what this means it, once I crack that light on, I'm assured that I will have max brightness to complete my tasks, then, for the rest of it's service life, it can serve either as minimal lighting or as a trail marker together with other activated chem light.