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Re: Pack weight

>                                     food dye (for testing the water
> filter)

I've never heard of this.  I guess you just put some food coloring in the
intake source (cup, bag, whatever) and if the dye was present in the output,
you could assume the filter wasn't working properly? 
S. Schuyler Stultz              Recognition Research Inc.
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                                Blacksburg, VA 24060