Cyalume 8 Hour Blue Safety Lightstick Past Expiration Review
Nov 5, 2015 6:47:28 GMT -7
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cajunlady87, Redneckidokie, and 1 more like this
Post by Cwi555 on Nov 5, 2015 6:47:28 GMT -7
Cyalume is a specific brand name for these lights. As such, specific chemistry, chemical purity so forth will play a definite role in how well, and how long they function. Diphenyl oxalate is what Cyalume uses. Some companies add a weak base which makes the decomposition of diphenyl oxalate into phenol and eventually carbon dioxide more energetic (brighter).
Changes in color will necessarily change chemical composition in greater and lesser degrees. It will also impact long term stability.
9,10-Diphenylanthracene is the additional chemical compound for blue as it turns out. The downside is once activated, it has a shorter lifespan than either green (9,10-Bis(phenylethynyl)anthracene), or red (Rhodamine B).
The upside is the blue is most stable for long term storage.
The red for what its worth is the brightest and works in a different manner than the others. It also burns out the fastest and with the shortest shelf life for the same reason.
What CL has done is discover the longest shelf life variant of light sticks. The jokers in the crowd should be paying attention instead of giving her a rash of crap.
For myself, I hadn't thought to consider it as I rotate stock based on the published data. That after the research that yielded the above information, turns out to be short sighted in the event no more of them can be obtained. The latter is definitely a possibility given what these lights decompose into to generate that light to begin with. I can see them being branded environmentally unfriendly and restricted or banned even though that would be horsesh**.
Bottom line is, it's important if any of you believe there is a valid need for these items. If not, just ignore this post.
Changes in color will necessarily change chemical composition in greater and lesser degrees. It will also impact long term stability.
9,10-Diphenylanthracene is the additional chemical compound for blue as it turns out. The downside is once activated, it has a shorter lifespan than either green (9,10-Bis(phenylethynyl)anthracene), or red (Rhodamine B).
The upside is the blue is most stable for long term storage.
The red for what its worth is the brightest and works in a different manner than the others. It also burns out the fastest and with the shortest shelf life for the same reason.
What CL has done is discover the longest shelf life variant of light sticks. The jokers in the crowd should be paying attention instead of giving her a rash of crap.
For myself, I hadn't thought to consider it as I rotate stock based on the published data. That after the research that yielded the above information, turns out to be short sighted in the event no more of them can be obtained. The latter is definitely a possibility given what these lights decompose into to generate that light to begin with. I can see them being branded environmentally unfriendly and restricted or banned even though that would be horsesh**.
Bottom line is, it's important if any of you believe there is a valid need for these items. If not, just ignore this post.
