Bachmann Spectrum J

[NW Modeling List]

Lois,  
Little packets of silica gel are found in all sorts of products because  
silica gel is a desiccant -- it adsorbs and holds water vapor. In leather  
products and foods like pepperoni, the lack of moisture can limit the growth of 
 mold and reduce spoilage. In electronics it prevents condensation, which 
might  damage the electronics. If a bottle of vitamins contained any moisture 
vapor and  were cooled rapidly, the condensing moisture would ruin the 
pills. You will find  little silica gel packets in anything that would be 
affected by excess moisture  or condensation.  
Silica gel is nearly harmless, which is why you find it in food products.  
Silica, or silicon dioxide (SiO2), is the same  material found in quartz. 
The gel form contains millions of tiny pores that can  adsorb and hold 
moisture. Silica gel is essentially porous sand.  
Silica gel can adsorb about 40 percent of its weight in moisture and can 
take  the _relative humidity_ (http://www.howstuffworks.com/question651.htm)  
in a closed container down to about  40 percent. Once saturated, you can 
drive the moisture off and reuse silica gel  by heating it above 300 degrees F 
(150 C).  
Tom B.
 
 
In a message dated 7/14/2010 6:48:35 A.M. Eastern Daylight Time,  
nw-modeling-list at nwhs.org writes:

I  recently purchased the HO Scale Bachmann Spectrum J #610. I will note on 
one  oddity as I opened the package. There was a tiny packet tucked in at 
the  bottom, with what appears to be cinders. Any ideas on what this is?
By the  way, with the arrival of the Spectrum J on my roster, all my old 
run Bachmann  J's have been put up for sale. They are #608, #611, #606 and if 
you are  interested, email me and make a offer.
Lois J. Ponton
611  Historian
_ljp611 at ntelos.net_ (mailto:ljp611 at ntelos.net) 

 
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