Package making – Methods – With contents treating
Patent
1991-10-24
1992-11-03
Culver, Horace M.
Package making
Methods
With contents treating
53440, 53467, 53474, 53477, B65B 2906, B65B 3102, B65B 3106, B65B 5120
Patent
active
051597993
ABSTRACT:
A sealed indicator vial to detect the presence of a predetermined contaminant in water containing a mixture of reagents reactive in the presence of water, the mixture being sufficiently dehydrated to prevent the reaction of said reagents while sealed in said vial. The vial contains an inert atmosphere at less than atmospheric pressure. Also described is the method of producing such an indicator vial in which a tube containing the dehydrated reagents is heated and stretched to form a narrow waist while under vacuum.
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Chaconas Peter G.
Rising Peter E.
Belkin Leonard
Culver Horace M.
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