Disposable caffeine testing device

A device for detecting and indicating the caffeine concentration of a beverage includes a disposable test sheet having a reagent section and a color chart. The reagent section is impregnated with a reagent which, when reacted with caffeine, produces a characteristic chromogenic and color change. The...

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Bibliographic Details
Main Author DEEGAN JOHN H
Format Patent
LanguageEnglish
Published 19.09.2002
Edition7
Subjects
BEER
BIOCHEMISTRY
CHEMISTRY
COMPOSITIONS OR TEST PAPERS THEREFOR
CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL ORENZYMOLOGICAL PROCESSES
ENZYMOLOGY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEICACIDS OR MICROORGANISMS
METALLURGY
MICROBIOLOGY
MUTATION OR GENETIC ENGINEERING
PHYSICS
PROCESSES OF PREPARING SUCH COMPOSITIONS
SPIRITS
TESTING
VINEGAR
WINE
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Summary:A device for detecting and indicating the caffeine concentration of a beverage includes a disposable test sheet having a reagent section and a color chart. The reagent section is impregnated with a reagent which, when reacted with caffeine, produces a characteristic chromogenic and color change. These changes vary according to the caffeine concentration of a tested beverage sample. The color chart includes a plurality of color gradations corresponding to ranges of caffeine concentrations and includes numerical indicia corresponding to respective color gradations. The color chart further includes indicia indicative of representative beverages corresponding to respective color gradations and numerical ranges. The color chart may be arranged concentrically about the reagent section or in tabular list form. The test sheet includes a polymeric layer to prevent a beverage sample from soaking through the reagent section.
Bibliography:Application Number: US20010804770