Re: Re; Glow stcks
Amick Robert (amick@SPOT.COLORADO.EDU)
Wed, 1 Oct 1997 10:54:11 -0600
The "glow sticks" are typically Cyalume or equivalent products which emit
visible light when two chemicals are mixed inside the container. One of
the "activator" chemicals is stored in a sealed glass tube which is broken
by bending the plastic outer housing, thus starting the reaction. The
reaction (depending on the type of device) can last up to 12 hours.
However, it cannot be "recharged" by refrigeration, because the course of
the reaction once complete does not reverse itself with lowered
temperatures. Hence the products are for "one-time use."
Unless the "glow circles" use a different technology than the light
sticks, it is unlikely that they would be "recharged" by refrigeration
either. As with batteries and film, or other chemical based products,
refrigeration can prolong the useful "shelf life" of the products by
slowing the deterioration process before the product is used.
Glow sticks are an excellent product to add to "survival" kits and
disaster preparedness home kits, as an adjunct to flashlights, since they
require no batteries that can decompose or run down with age, and are
lightweight and relatively inexpensive; and they produce a fairly high
level of useable light.
Our summer camp has used them in unlighted buildings such as latrines for
the convenience and safety of those who have to make a "late night
journey"; and many folks used them at jamboree to identify their troop
sites or to help keep Scouts together after the arena show by using two
color combinations attached to hats while they hiked back to their
The "yellow green" version of the lightstick produces the highest lumen
output and a color that the human eye is most sensitive to. Reds and
blues are less visible, but still colorful.
I would also agree with the earlier post that sometimes scouts break open
a tube of the cyalume chemical and for whatever reason get it on their
skin, or worse their eyes. As was noted in the other post, it is not
toxic, but can be irritating especially to the eyes, so should certainly
be irrigated with copious amounts of water.
Bob Amick, EMT-B, Explorer Advisor, High Adventure Explorer Post 72,
On Tue, 30 Sep 1997, Lorie McGraw wrote:
> Isn't it true that glow sticks can be stored indefinitely in the freezer. I
> heard also that those glow circles that they sell at the 4th of July
> fireworks can be recharged in the freezer.
Terry Howerton Sakima Group, Inc. SCOUTER Magazine Kansas City