RE: if this exists, what's it called?

Subject: RE: if this exists, what's it called?
From: "McLauchlan, Kevin" <Kevin -dot- McLauchlan -at- safenet-inc -dot- com>
To: Dossy Shiobara <dossy -at- panoptic -dot- com>, "techwr-l -at- lists -dot- techwr-l -dot- com" <techwr-l -at- lists -dot- techwr-l -dot- com>
Date: Wed, 7 Mar 2012 16:50:07 -0500

Damage. Good call.

Telatemp's products would be ideal if they covered -35 degrees Celsius
on the low side, and +150C on the high side.

As I mentioned to somebody off-list, I saw some years ago that were
little glass vials within vials, with calibrated fluids inside, meant
to either freeze at a certain low-temp value and crack the inner vial
(allowing the fluid to contact a color-change reagent in the outer vial),
or boil and crack the inner vial (or burst a plug), similarly allowing
the contents to reach a reagent that then changed color permanently.

Of course, I don't think they were terribly precise. Don't know if
they're still made. Don't know if they'd cover the desired temps, either.
Don't know what they were called, which would make Google a bit
friendlier. :-)

> -----Original Message-----
> From: techwr-l-bounces+kevin -dot- mclauchlan=safenet-inc -dot- com -at- lists -dot- techwr-
> l.com [mailto:techwr-l-bounces+kevin.mclauchlan=safenet-
> inc -dot- com -at- lists -dot- techwr-l -dot- com] On Behalf Of Dossy Shiobara
> Sent: March-07-12 3:46 PM
> To: techwr-l -at- lists -dot- techwr-l -dot- com
> Subject: Re: if this exists, what's it called?
>
> I was thinking "damage indicators" that are used for shipping --
>
> http://www.uline.com/Grp_332/Damage-Indicators
>
> The Telatemp temperature recorder sounds like it's the kind of thing
> you're looking for:
>
> http://telatemp.com/productinfo.html?product_id=100
>
> It's "non-reversible" which I'm guessing means the color change is
> triggered by a one-way chemical reaction that's triggered at various
> temperatures. I don't know how durable these things are -- e.g., how
> long the things remain "reactive" vs. become inert, etc. I'm sure it's
> something that's easily researched with a call to the manufacturer to
> see if it meets your requirements.
>
> Similarly, Telatemp's "coldsnap" recorders seem to work for the other
> side of temperature measurement:
>
> http://www.telatemp.com/c/198/temperature-tags-labels-coldsnap
>
>
> On 3/7/12 3:37 PM, McLauchlan, Kevin wrote:
> > Now, I'm looking for a similar passive device that can be attached to
> (or inside) a product that will record (by color change or other
> indication) if it has ever been exposed to a given maximum or minimum
> temperature. I know I've seen something in the past, but I just can't
> remember what it was called, to find it again. So far, all I'm seeing
> are min-max recording thermometers, mostly devices with batteries, and
> therefore a short life, intended to track the handling of a shipped
> product from one sender to one recipient - a matter of days or weeks,
> at most. I'm looking for something that the service people can view
> when they open a "broken" product that has been RMA'd possibly 5 years
> after it was sold and see that it was once subjected to -35 degrees
> Celsius (or +150 or whatever).
>
> --
> Dossy Shiobara | "He realized the fastest way to change
> dossy -at- panoptic -dot- com | is to laugh at your own folly -- then you
> http://panoptic.com/ | can let go and quickly move on." (p. 70)
> * WordPress * jQuery * MySQL * Security * Business Continuity *
>
>
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References:
if this exists, what's it called?: From: McLauchlan, Kevin
Re: if this exists, what's it called?: From: Dossy Shiobara

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