Cyalume SnapLight Industrial Grade Chemical Light Sticks, White, 6 Long, 8 Hour Duration (Pack of 10) Color: White, Model: 9-08006

Q: Would I be able to go free diving with this in a state park spring?

Great day Zachary, Great question,Yes you can, Factory short description;Cyalume's industrial grade 6 in. SnapLights provide 360 of illumination. They are foil wrapped for light/moisture protection, maintenance free, non-toxic, non-flammable, and waterproof.A customer in San Diego, CA stated; A must have to keep around for emergencies, also good for the kids at parties, in campers, on boats,etc.We zip tie them to our scuba dive gear when we do night dives a great safety light!Thanks for asking, RiccaPlanet

Q: I saw a military grade version that only last for 30min. How come these lasts for hours?

There are different grades of light sticks for different uses. The 30 min you saw where rated as High Intensity, those last for approximately 30-45 minutes at the maximum output. There is also an Ultra-High Intensity version which lasts for only a few minutes. Those are rated for 5 minutes of maximum output. They either put in a catalyst to speed up the reaction in the high intensity sticks or an inhibitor in the longer time sticks. The longer the time on the stick, the less light output. I hope that helps.

Q: I understand the use for all the colors but blue. What are these for?

Blood shows up under blue light better.

Q: Do these have an expiration date? I'm thinking of putting them in my disaster kit.

Yes they do. The packs I bought early 2015 have the expiration date of 11/19 so they last over four years at least. They work great. Hope this helps.

产品编号: 240887119

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规格

Manufacturer	Toys & Child
Model number	9-08006
Item Weight	220 g
Product Dimensions	22.23 x 8.26 x 7.62 cm; 220 g
Item model number	9-08006
Item Height	3 Inches
Item Width	3.25 Inches
Are batteries included?	No