Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Patent
1982-02-25
1985-06-04
Bernstein, Hiram H.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
73149, 422100, G01N 700
Patent
active
045213771
ABSTRACT:
A flow through fluid analyzer and method of analysis which comprises providing a transparent analyzer tube having an open ended outer reservoir, a capillary tube connected at one end to the inner end of the outer reservoir and at its opposite end to the inner end of an inner reservoir provided with means for drawing fluid placed in the outer reservoir through the capillary tube into the inner reservoir and for returning the fluid to the outer reservoir, the analyzer being first filled with a carrier fluid which is nonreactive or predictably reactive to the constituents of the fluid being analyzed, followed by the introduction of a sample bubble of the fluid to be analyzed into the outer reservoir, the volume of the sample bubble being initially measured as it is drawn through the capillary tube into the inner reservoir by measuring the change in the volume of fluid in the inner reservoir as the leading and trailing ends of the sample bubble pass a reference point on the capillary tube. The carrier fluid is replaced by a reagent for a constituent of the sample bubble and the reagent reacted with the sample, followed by return of the bubble to the capillary tube where its volume is again measured, the difference in volume of the sample bubble between the first and second measurements indicating the volume of the constituent affected by the reagent. If additional constituents of the sample are to be measured, the first reagent is replaced by a reagent for another constituent of the sample bubble and the procedure repeated.
REFERENCES:
patent: 2363027 (1944-11-01), Vayda et al.
patent: 2866691 (1958-12-01), Feichtinger
patent: 4299794 (1981-11-01), Kelley et al.
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